Why are dog breeds more well known than cat breeds? Have you noticed that the breeds of dogs look so different? The Maltese weighs about 7 pounds, while the British mast dog weighs up to 240 pounds. It’s not just weight.
Just look at the difference in shape between a dachshund and a German shepherd. On the other hand, cats have fewer changes. The Singaporean cat weighs about eight pounds, while the largest domestic cat, the Maine Coon, weighs only about 20 pounds.
Except for their size, the breeds of cats are almost the same. Facts have proved that there are 190 recognized dog breeds in the United States, but only 42 cat dog breeds. So, why are cats not as extreme in size and shape as dogs? I had a conversation with Carolyn Vella, a former member of the Cat Fans Association. “Dogs are more appreciated than cats because they are useful. They can graze, work, and are considered protective animals.” The best friend of mankind has been around for a long time. When they do not hug their own people, they may engage in certain types of labor. The German Shepherd is used as a German Shepherd.
It is much easier to make Spike herd sheep than to do it yourself. Foxhounds used to… well, these names are self-evident, you see. Whether you want to protect property or cultivate land, there is a dog. Through selective breeding, owners can really shape their dogs according to their needs.
So why are there not so many cats?
Vera said: “Cats are originally admirable. The purpose of cats is to see them. They are so beautiful. Cats have been respected by people for decades.” Even so respected that in some cases , They were ignored or even prohibited from breeding. “The Japanese Bobtail was originally a stray cat.
Later, the Emperor of Japan fell in love with this stray cat. He put it in the palace, and he decided that no one but this person could breed this cat.
When asked if there are as many cats as there are dogs, Vera said:
“I don’t think so. Many of us are opposed to all kinds of purebred animals because we have a lot of sheltered animals. They are very opposed to breeding animals because they want the shelter to be empty.” Organizations like PETA are opposed to choice Sexual breeding because it can cause health complications. Bulldogs suffer from respiratory diseases and overheating, and German Shepherds may suffer from hip dysplasia, in which case the leg bones are not suitable for their nest.
Cats are also unable to resist health problems.
Pedigree cats are at higher risk of cancer, kidney disease or joint disease. Carolyn believes that the United States has many rights to shelter animals. ASPCA estimates that about 6.5 million animals enter the shelter every year, and 1.5 million animals are eventually brought down.
Therefore, if you want to keep a pet, please consider adopting it from a shelter.
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How many dog and cat breeds are there?
Today’s “Daily Wonder” is inspired by Maitland’s Tarsha. Tarsha Wonders, “What is the role of hybrid animals?” Thank you for working with us, Wardering! Do you have pets in your house? If so, it may be a dog or a cat. To date, dogs and cats are the most popular domestic pets in the United States and worldwide. But, have you spent a lot of time observing cats and dogs carefully?
Cats of different breeds often look very similar.
Their face shape or coat length may be slightly different, but they are very similar in size and shape.
On the other hand, dogs come in various sizes and shapes. Line up pugs, dachshunds, poodles, a and golden retrievers in a row and you will see what we are talking about.
In addition to different faces and coats, dogs come in various sizes and shapes. Why are the two most popular pets so different in kind?
Both dogs and cats have been around for a long time.
Scientists believe that humans began domesticating dogs about 19,000 years ago, while cats have been domesticated for about 10,000 years. But when it comes to selective breeding of cats and dogs, most of the selective breedings that produced modern cat breeds have occurred in the past 75 years. On the other hand, dogs have been selectively bred for hundreds of years. These reproductive differences lead to significant differences in the number of reproductions of cats and dogs. According to the Cat Lovers Association, there are 42 different cats. However, there are 190 different breeds of dogs (according to the American Kennel Club) or 340 breeds (according to the World Canine Organization). Hundreds of years ago, humans began to breed dogs selectively in order to develop dogs with specific characteristics to complete various tasks.
Why are dog breeds so different?
There are hundreds of dog breeds, and there are fewer than a hundred different cat breeds. But this is not only related to quantity.
You will see great differences between dog breeds.
We have large, large and small dogs. We also have long-legged dogs.
Flat dogs and idiots, and some dogs don’t look like dogs from the beginning. We believe that among cats, the most significant difference is that some cats have their ears folded while others have no tails.
But they still look like cats. It will automatically ask a question-why is it so? How can we have so many dog breeds and so few cat breeds? Is it fair?
The reason why we have so few cat breeds
Compared with dog breeds, there are two main reasons why we have so few cats and dogs:
Dogs were domesticated earlier than cats. Our current understanding is that people who have dogs domesticated dogs at least 18,000 years ago, and only 10,000 years later raised cats. But this is not all. 2. Since the early domestication of dog breeds, we have selectively bred them for various purposes. In other words, if a dog is better protected, we will raise it with others.
If another dog is more suitable for herding or hunting, we will also raise it with a similar breed.
As a result, we started to create different varieties from the beginning. On the other hand, cats have only one purpose, and humans need them. In order to protect the granary from rodents, by the way, cats are already very good at it. Therefore, there is absolutely no need for us to selectively reproduce them. They roam and breed, but they want themselves.
Moreover, although the first mention of selective breeding of cats can be traced back to ancient civilizations, the main work has only begun in the last few centuries. Therefore, we have created new cat breeds in a short period of time. It is too short to create a variety of breeds in cat breeds, which is comparable to what we see in dogs. More importantly, as of today, it cannot change quickly.
Why can’t cats and dogs breed?
However, the nuances between cat breeds pale in comparison to the amazing physical differences between purebred dogs. Corgis and dachshunds have short and strong legs, slender and short bodies, while hunting dogs and whips are tall and thin. ast dogs are short-haired bruises and weigh more than 100 pounds. (45 kg), the chest and jaw are large and powerful.
At the same time, the delicate Malteses and shih-tzus have long and flowing hair and can be carried in a handbag. Why is the size and shape of purebred cats not as extreme as dogs? [Photo: Champion cat is the most outstanding stuntman]
According to the Cat Fanciers Association (CFA), there are currently 42 recognized cat breeds in the United States. As for dogs, the American Kennel Club (AKC) recognizes 190 dog breeds, although the international organization of the International Kennel Federation (FCI) also known as the World Canine Organisation (World Canine Organisation) recognizes 340 dog breeds.
Unexpected changes in the appearance of the bred animals-such as abnormal sizes, no tails, curly hair or special markings-are the result of genetic mutations, which always appear “naturally” and persist in new generations, Leon said.
Attract people’s offspring.
She explained: “Even if the basic body plan says one thing, mutations will occur, and humans will choose the mutations they like.” British Shorthair cats are known for their short and chubby body, round faces and eyes. . (Photo credit: Ishkov Sergey/Shutterstock)
Lyon said that most of the selections that now produce the most recognized cat breeds have been made in the past 75 years. On the other hand, according to Elaine Ostrander, lead researcher of the Cancer Genetics and Comparative Genomics Division of the National Human Genome Institute of the National Institutes of Health, dog breeds have been formed for hundreds of years. Skeletal evidence from western Russia shows that the domestication of dogs can be traced back at least 19,000 years ago, while the domestication of cats can be traced back to nearly 10,000 years ago.
This is based on remains excavated in the Near East. But with the development of human-animal partnerships, people quickly realized that dogs can perform highly specialized tasks. Ostrander told Live Science that through selective breeding, people living in different environments began to shape dogs that could help humans survive. For example, grazing goats in mountainous areas require that the traits of herding dogs differ from those of herding sheep in pastoral areas, Ostrander explained. She said that some people raise dogs to protect property, and help heavy farms to raise or hunt certain types of animals, such as large and powerful deer, small and fast mice or badges, which are hidden in the underground Warrens. In contrast, cats usually play one of two roles in the human family: companion or pest controller. Ostrander told Live Science that cats can perform these fairly simple tasks well in the default shape and size, so their owners will not reshape the cat’s body drastically. [Here, Katie, Katie: 10 facts about cat lovers]
However, she warned that selective breeding also has its drawbacks. “Strict selection usually leads to a decrease in overall overall diversity. If it is really difficult for you to choose a particular attribute, then you will thrive like an animal [animals similar to them], and you will lose Some diversity.” Sphynx cats look hairless, but most of them are covered in soft down coats, giving their skin an antelope-like texture. Cats with two copies of the Scottish fold mutation (which can tilt the cat’s ears forward and hug the head) are more likely to develop severe arthritis (called osteochondrodysplasia). Lyons said that Persian cats breed because of their strained faces and long, fluffy coats, and are genetically susceptible to polycystic kidney disease.
Ostrander explained that in dogs, a genetic variant produces dark coats in standard poodles and also makes them susceptible to squamous cell carcinoma, a type of skin cancer. She told Live Science: “No one is trying to breed a poodle with squamous cell carcinoma.” “But these variants are indeed very close in the genome, so if you choose one of them, the other will follow it. Come.” Lyons said that both the AKC and CFA are tracking scientists’ discoveries about cat and dog breed genetics, and are doing their best to prevent bad things from happening with the good things they want. Ostrander said that certain exaggerated physical characteristics can cause health problems, especially in dog breeds.
Ostrander explained that the characteristic skin folds of Shar Pei dogs with wrinkles can harbor infection-causing bacteria, while various dogs and cats with sharply shortened skulls may suffer from respiratory problems.
However, according to Osterland, in recent decades, more and more breeders have been struggling to control some of the most extreme variations in these traits and are studying to incorporate a growing library of genetic data. Breeding strategies to produce healthier animals. “For breeders 20 years ago, this was not an easy task. To say’the breeding standards must be changed’,” Ostland told Live Science. “But they know it now.
The trick here is not to abandon every carrier of a recessive disease (as an animal) from the breeding program and not to reproduce the carrier as a carrier.
One of the most interesting differences between dogs and cats is the diversity between breeds.
Some dogs weigh more than 200 pounds, while others weigh just over 5 pounds.
Certain dog breeds also look very different, almost to the point where they completely look like different animals. On the other hand, most cats are very similar in size and appearance. Considering that there are only 42 recognized cat breeds in the United States, and 192 dog breeds do not include designer mixes, this is not surprising. The question is, why are there more dogs than cats?
The first dog breeds
The first reason lies in the fact that it is said that the domestication of dogs began at least 19,000 years ago, while the domestication of cats began about 10,000 years ago. However, the time interval alone does not produce the diversity of dogs we see today.
The dogs are trained to herd sheep, catch foxes, protect the owner’s crops, and perform other tasks that are easier than humans. The work-related abilities and physical attributes of each dog breed are different, which prompted the first batch of dog owners to use selective breeding. They have to keep certain tasks in mind when raising dogs, and because there are many tasks left to dogs, many new breeds have emerged. Obviously, these new varieties are more limited than those that the owner must select in advance, and can accomplish the task more efficiently. Once a trait is found to be useful, more dog breeds will be produced to further emphasize the trait. Cats are kept for different reasons
The first domesticated cats also had jobs, but their physical requirements were far less than those assigned to dogs. They mainly catch the mice or provide comfort to the host by staying around. Therefore, although different dogs are provided with tasks requiring different physical attributes, cats only need to do it themselves to complete the “task” well. Dogs need to be selectively raised to better accomplish tasks, and cats do not need to change their body shape to function.
In fact, selective breeding of cats is not popular in some countries. Carolyn Vella, a former member of the Cat Lovers Association, told Business Insider:
“The Japanese Bobtail was originally a stray cat.
Then, the Emperor of Japan fell in love with this stray cat. He raised it in the palace, and he decided that no one but himself could breed this cat.
Since then No one can breed this cat. But the Emperor of Japan can own or own a Japanese Bobtail. “Will there be as many cats as dogs? As various organizations generally oppose selective breeding, you may not see more cat breeds appear.
There is a big difference between a Pomeranian and an English M dog, and there is not much difference between a Meng Kejin cat and a Maine Coon
People explain: There are many breeds of dogs, but why don’t cats have the same breed?
The Puppy Bowl will be launched in a few days, and the upcoming Westminster Dog Show is approaching.
We can’t help but be curious about the recent diversity of dog breeds. It turns out that when it comes to characteristics such as size, shape, weight, height, coat color, texture, and many more other variables, we are not the only ones who think about unmistakable puppies and show dogs. A good example: there is a huge difference between a small Pomeranian and a large English (dog (over 100 pounds!), and a small Munchkin cat and a large Maine Coon (may be 10 to 15 pounds) Not much difference between them. Get push notifications with news, features, etc. According to the American Kennel Club, there are currently 192 different recognized dog breeds in the United States (this does not include all designer mixed breeds and other mixed breeds; the World Dog Organization recognizes 340 breeds). There are only 42 different cat breeds. How did this happen and why? As shown in the video above, and expanded through Live Science, in the domesticated species of dogs and cats, “breeds represent a pedigree that has been carefully monitored and manipulated for a long time through selective breeding to consistently produce certain traits. Animals,” Professor Leslie said.
Lyon at the University of Missouri School of Veterinary Medicine. A group of cats and dogs looking at the camera Credit: Abdessamad Ghayour/Getty
Changes in animal appearance (and behavior) usually occur naturally through genetic mutations. This is where we discovered the first difference between dog breeds and cat breeds: According to Professor Lyon, the various cat breeds that people see today have only existed for about 75 years, when humans began to select unique traits and Breed unique cats.
However, a study published by the National Library of Medicine and the National Institutes of Health in 2008 entitled “Cat Breeds Rising: Genetic Evaluation of Breeds and Global Random Breed Populations” further illustrates that Most cat breeds have been developed in the past 150 years, mostly in Europe and the United States. Although cat breeds have unique genetic clusters based on their origins (Mediterranean Basin, Europe/America, Asia and Africa), the Cat Fanciers Association (CFA) Sixteen species have been designated as “basic” cats: for example, Persian cats, Russian blue cats, Siamese cats and Angora cats. As people continue to breed them, genetically, their overall groupings are still very close. At the same time, dog breeds have been developed for hundreds or even thousands of years. According to Elaine Ostrander, lead researcher at the Cancer Genetics and Comparative Genomics Laboratory of the National Human Genome Institute of the National Institutes of Health, dogs have been domesticated at least 19,000 years ago (and 10,000 years ago was Cat). Although both species helped early humans, dogs took on many different tasks or “jobs”, while cats mostly just controlled pests or acted as companions. Cats perform these limited tasks well in their original form, while dogs are indeed shaped according to the various needs of humans. This difference is the key. Therefore, today when modern cats are also engaged in different jobs (from fireplace pets to mayors), will feline breeds still chase canine brothers? Related: Is the bullring as safe as a pet?
According to “Business Insider” reports, this is unlikely.
Former CFA member Carolyn Vella told the media that the breeding of cats is mainly admirable.
In addition, “We have a lot of people opposed to all kinds of purebred animals because we are sheltering animals in many situations. They are very opposed to breeding animals because they Hope the refuge is empty.”
Vella’s comments imply that organizations like PETA are opposed to reproduction due to health issues associated with the practice.
Bulldogs have difficulty breathing, German Shepherds often suffer from hip dysplasia, and Shar Pei’s skin wrinkles and wrinkles may carry infectious bacteria.
Similarly, family tree cats also have a higher risk of joint and kidney problems and cancer.
The various characteristics seen in dog breeds are endless. There are small hairless dogs that can fit in your pockets, and large, sturdy dogs with fluffy coats that sweat when they are up together.
At first glance, you can tell the difference between a Yorkshire Terrier and a Golden Retriever, or a Corgi and a Dog, but they all have the name “dog”.
On the other hand, the appearance of cats is usually the same-whether it is a rag doll or a shorthair cat, most cats are the same shape and size. Some breeds like the Sphinx are easy to identify, but the ears still have pointed ears, long tails and body shapes like other cats. We don’t often question our pets-we are happy that they are here and they love us, but LiveScience.com recently raised a question. Most of us are so busy watching cat videos that we can’t ask: Why is the dog breed?
It looks so different, but isn’t the cat breed? The short answer: humans. The relationship between humans and dogs can be traced back nearly 20,000 years ago. Think of your Golden Retriever, who loves water and was raised to retrieve waterfowl, or think of your Jack Russell Terrier, who has endless stamina-perfect for fox hunting. The traits that make certain dogs perform better are naturally occurring genetic mutations that are then bred. Example: Compared to other people, red hair in humans is a rare feature, but if someone decides to only want red-haired children, they should only choose red-haired partners-although red hair occurs naturally, it can be reproduced. This is what humans choose for dogs.
After thousands of years of breeding, we now have more than 300 different breeds of dogs recognized by the World Canine Organization.
But selective breeding was never perfect, especially 20,000 years ago.
We have great working dogs and great pugs, but we also see breeds that are more prone to hip dysplasia or swelling than their mixed cousins. There are cats?
Have you ever wondered why there is such a big change in the body shape and physique of dog breeds (just comparing Chihuahuas with Irish wolfhounds), while cat breeds do not have this main breed? After all, both of these species are affected by deliberate human reproduction. What is selective breeding?
When people breed two animals and express their intention to enhance specific characteristics (whether personality or physical characteristics), this is selective breeding. Genetic mutations occur naturally during the existence of a species.
Some of them help to survive and slowly take root and change the species over time, while others do not.
However, when intentional selective breeding is carried out, a species can be changed more quickly, and it is not necessarily helpful for natural survival.
Humans use selective breeding in animal populations to enhance specific animal traits that are helpful to us. Why does selective breeding produce such different results in dogs and cats? Humans have coexisted with cats and dogs for many generations, and have selectively bred these two species, but due to our goals, these activities have achieved very different results. The possible reason why our efforts have resulted in more physical variation in dog breeds than cat breeds is because of the many ways in which dogs can work for humans. They can pull sledges, protect objects and people, move around, hunt or help hunt many animals, from burrowing animals to clumsy large land animals.
These jobs require very different body structures and personalities. In order to hunt rodents and provide companionship, the basic body structure of cats does not need to be changed much. The changes introduced in the selective breeding of cat breeds are mainly related to cosmetics and personality traits, such as hair length and easy-going personality. Improve disease through selective breeding
Sometimes the traits that humans are trying to enhance in dogs or cats are in the same gene as the mutations that can cause disease. When this happens, the result is that certain breeds are susceptible to the disease. The Scottish Fold cat is an example.
Genes that allow ear tips to fold can also cause cartilage problems in other parts of the body. The result is a painful condition called osteochondral dystrophy. Man-made diseases of cats and dogs
Sometimes, it is not the genetic conditions created by selective breeding, but the problems caused by the extreme physical characteristics of breeding.