Question 1: Why are cats colder than dogs? Because dogs are fully domesticated pets and cats are semi-domesticated pets. So cats have many independent personalities, while dogs are more dependent on their owners. This makes it easier for dogs to get close to people, while it is not easy for cats to fully accept people psychologically. Of course, cats still rely on their owners' words.

Question 2: Why are cats colder than dogs? Cats don't catch a cold very much, because dogs are big and need more exercise to consume energy, so as not to be too energetic and bite to vent. Cats are small and have little energy. They prefer sleeping or playing with cat sticks, just like men and women. Some people think that boys are too lively, but girls are actually teasing O-O.

Question 3: Why are cats so cold? Personally, I think cats are not too cold and very cute.

Question 4: The reason why the cat is so cold to you is to attract your attention. Dogs have been domesticated for at least 30 thousand years, and cats began to get along with people about 9,500 years ago. This is in line with your intuition. No matter from which aspect, dogs are always willing to be good partners of human beings, while cats often show their indifference. If you ask a zoologist to explain this problem, he will probably say that it is very simple, because cats are the only semi-domesticated animals.

Now the wild ancestor of domestic cats is African wildcats. If they are placed side by side, it is difficult to tell them from the appearance: African wildcats look like domestic cats with tiger stripes. If we must tell the difference, it is probably that the legs of wild cats are longer than those of domestic cats, and their gait is more like cheetahs. This difference is especially obvious when the cat squats straight, and the cat on the bronze ware in ancient Egypt clearly shows this sitting posture.

In fact, the range of activities of African wildcats is very close to that of human settlements, so they often mate with domestic cats to breed. The existence of a large number of hybrid individuals makes the boundary between them and domestic cats more blurred. However, if you try to touch them, you will immediately feel the difference in personality. It may be that the wild cat flinched with fierce eyes, and it must be that the domestic cat is lying on its stomach for you to scratch.

Cats entered human society shortly after their ancestors in the Middle East just began to adapt to agricultural life. Attracted by the rats stealing food in the barn, the wild cats who used to live in the desert slipped into the human village. Among them, those wild cats closest to humans are more likely to be protected and treated with leftovers, so they gradually settle down in the village.

So, what has happened in the domestication history of nearly ten thousand years? A paper published in the Proceedings of the National Academy of Sciences in June165438+1October this year compares the genomes of wildcats, several domestic cats and common mammals, which helps us to reveal more about cats and how other species, including humans, have lost their wildness.

Michael, one of the authors of the paper? Montague is a postdoctoral researcher at St. Louis University School of Medicine. His research began with the genome of an Abyssinia female cat. After comparing the genomes of domestic cats, cattle, tigers, dogs and humans, he listed 28 1 gene whose genetic information changed rapidly in domestic cats.

Some of these genes are related to hearing and vision, which explains that cats have a slightly weaker sense of smell than dogs, but their vision and hearing are stronger at night, which is also an important skill for cats to hunt. In addition, cats also have genes related to perceptual pheromones, which gives them the magical ability to find prey and the opposite sex at a long distance.

In addition, the researchers unexpectedly discovered some genes related to lipid metabolism. Animals such as cats and tigers are born to eat only meat, but even if they eat a lot of fatty acids, they will not get hyperlipidemia and heart disease. These genes may exist just to adapt to a highly carnivorous lifestyle. Unfortunately, they do not exist in humans and cattle, so humans need to eat a lot of starch and cellulose to balance their diet.

The most interesting discovery in montague's research is that they compared the genomes of 22 domestic cats, African wildcats and European wildcats. It is found that at least 13 of the genetic changes can make domestic cats docile, such as fear reaction and the ability to learn new behaviors after being rewarded with food. "This is consistent with our understanding of domestic cats," montague said. "To adapt to the domesticated life, don't be too afraid of strangers and new environments, but give rewards and feedback so that they can be fed by humans for a long time."

"This is my favorite part of the whole study." Lindblad, a comparative genomics scientist at Uppsala University in Sweden, believes that some genes related to glutamate receptors have played a great role in learning and memory, and they have been screened out from generation to generation in the process of human evolution. "In evolution, humans tend to keep genes that contribute to brain development and make people better at socializing."

Montague also found five important genes in domestic cats, which affect the migration of neural crest cells and embryonic stem cells. These genes may explain several questions raised by Darwin: Why do domestic animals have a small ratio of brain to body and a specific black and white color?

Black and white flowers are very rare in the wild ancestors of domestic animals, but generally appear in various animals selected by human beings. This is because the melanocytes that control coat color all come from neural crest cells. Once the latter mutates in the development process, it will lead to the decrease of pigment in the corresponding area of the animal, which looks like white spots or large plaques. The areas most prone to pigment deficiency are the areas where neural crest cells eventually migrate, such as under the throat, above the eyes, claws and tail tips.

When cats are adopted by humans, they don't need ...

Question 5: Are cats cold pets? Cats are very clingy.

Question 6: Why are cats taller than Wang Xingren? Cold dogs have been domesticated for at least 30 thousand years, while cats began to get along with people about 9,500 years ago. This is in line with your intuition. No matter from which aspect, dogs are always willing to be good partners of human beings, while cats often show their indifference. If you ask a zoologist to explain this problem, he will probably say, it's very simple, because cats are the only semi-domesticated animals, and they are still wild. Cats only eat meat.

Question 7: Is the cat cold and arrogant or coquetry? It shows that this cat is not clingy, arrogant, cold and difficult to serve. Congratulations to the landlord. .

Question 8: Why do cats love their owners less than dogs? Dogs are particularly enthusiastic about their owners, while cats are generally cold. After all, there are two kinds of creatures. Some cats love their owners very much and can take them out for a walk, but they all think their owners are cold and mysterious.

Question 9: What kind of cat is afraid of cold? The mother cat is very cold. .

Comparatively speaking, Persian cats and Russian blue cats are still relatively cold.

Every cat has a different personality. Variety can only refer to it in general.

Question 10: The cat is very cold. What should I do if I don't care about people? Many cats are like this ... there's nothing they can do. In fact, cats, like people, have different personalities. It's just unfortunate that you just picked a cold one.