The kitten cat has long white hair, pure blue eyes, but there is a black vein on its head

It's similar to our family, it's an ordinary domestic cat, and many people say that it's a cross of Persian cats, and there is no breed, and the bloodline is too vague to be able to distinguish It's an ordinary domestic cat, and our steamed buns are still full of elephants. We have a black spot on our head.

But LZ wants to know what the meaning of varieties is. It doesn't matter if it's a good breed or not. It's not good to love them.

Our steamed buns are small domestic cats. Mao Mao is pure Mumbai. But it's all the same love for our family. Breed or something. It doesn't matter at all the color of the cat and generally not as good as white for hybrid cats.

It's just an ordinary domestic cat, and it's full of elephants like our steamed buns. We have a black spot on our head.

But LZ wants to know what the meaning of varieties is. It doesn't matter if it's a good breed or not. It's not good to love them.

Our steamed buns are small domestic cats. Mao Mao is pure Mumbai. But it's all the same love for our family. Breed or something. It doesn't matter at all.

Oh my God, there's not a hint of a Boss cat, it's either a short-legged or a wide face, it's just a normal domestic cat hybrid, and the color of the Boss cat is generally not white.

The white cat has a pinch of black hair on its head is a Chinese pastoral cat or a string cat, and the Chinese pastoral cat generally refers to the domestic cats native to China, which are more common and less difficult to raise.

There is a folk saying that the cat's coat is pure white and the tail is pure black, and there is a black ball on the forehead, which is called the hanging seal drag gun, also known as the Indian star cat, and the people who get this kind of cat will be rich, in fact, as long as the cat is raised by the owner, it will grow very well.

The Chinese pastoral cat is a general term for China's native domestic cats, which are mostly used to drive away mice, protect crops, and are now mostly used as pets. Among them, there are raccoon cats, orange cats (yellow civets), Sichuan Jianzhou cats (four-eared cats), three-flowered cats, white cats, black cats (black cats), black and white cats, yellow cats, Shandong lion cats and other breeds, among which the raccoon cats and yellow civets are the most common (gray civet cats are rarer), among which the orange cats are the most prone to fat, and the pure white long-haired heterochromatic Shandong lion cats are particularly rare and precious.

Because historically, cat breeds have not been artificially selected and cultured as goldfish have been valued, so cat culture is not as developed as in Western countries. In the past, our Chinese common cat has not had a scientific name, and in recent years, it has been named "Chinese Pastoral Cat" according to the same embarrassing Chinese ordinary domestic dog. After six years of unremitting efforts by CFA China Great Wall Cat Club"Chinese Pastoral Cat"class"Chinese tanuki cat"It has become the only local Chinese natural variety recognized by the world.

It is a little black and is a characteristic of this cat.

It's the season of unbearable heat again, and refreshing and delicious watermelon has become the "standard" in summer. Can you really determine the ripeness of a watermelon by tapping it and listening to the sound? What is the principle of this seemingly simple way?

Researchers have conducted a study on "listening to the sound to distinguish the melon", and the research shows that there is a scientific basis for slapping the watermelon with your hands and listening to the sound to judge the quality of the watermelon. The test principle of this method is that the propagation of sound waves in the medium is affected by the density and texture of the medium, so the relationship between the sound waves obtained by slapping the watermelon and the quality of the watermelon can be found. In this way, the sound waves obtained by slapping the watermelon can be analyzed without having to cut it, and its ripeness and internal quality can be checked.

Specifically, the structure of watermelon is divided into melon skin and melon pulp. During the ripening process of watermelon, the hardness and elastic modulus of the melon skin change, that is, the flesh of the ripe melon skin is more elastic, and there will be a slight rebound feeling when beaten. In addition, under the action of cellulase, the internal cellulose of the melon pulp is degraded, and the sugar content and its own structure of the watermelon also change, and the knocking sound will naturally be different.

Considering the watermelon as an elastic multi-layered sphere, when people hit the watermelon to vibrate and make a sound, the analysis of the generated sound wave signal can get the following results: when the unripe fruit is beaten, its sound wave amplitude reaches the maximum, and then decays sharply, showing an irregular attenuation waveform. The maximum amplitude of ripe fruit and overripe fruit occurs at a certain moment after beating, and its waveform is symmetrical up and down, showing regular attenuation.

The embodiment of sound waves is vibration and echo, so the crisper sound when percussion is raw melon, and the more dull percussion sound is ripe melon.

To put it simply, the pulp density of raw watermelon is high, and the sound of knocking is brittle, and the density of ripe watermelon pulp is relatively low, so it is relatively stuffy when knocked, and the vibration frequency of watermelon after being knocked is within the range that the human ear can perceive and distinguish. Therefore, when buying watermelons, you can hear different sounds by gently patting different watermelons. When the watermelon makes a crisp sound of "dangdang", it may be a raw melon, and the one that makes a turbid and heavy "bang" sound should be a ripe melon, and the one that makes a "poof" sound may be an overripe melon.

In fact, in addition to patting and listening to the sound, there are many ways to distinguish the good and bad of watermelon.

The very white cat has a little black on its head, which is particularly obvious and looks particularly cute, and the rain cat is called, the princess, and the male cat is called the prince.

There are only two coat colors on the cat's body (foreigners call it red, sweat) and black. The gene that controls the coat color is present on the last pair of chromosomes in cats, the XY chromosome. Like humans, this pair of chromosomes is a pair of chromosomes that determine sex.

Therefore, the inheritance of cat coat color is also called companion inheritance.

Cats, belonging to the feline family, are divided into domestic cats and wild cats, and are the most widely used pets in families around the world. The ancestors of the domestic cat, presumably the desert cat of ancient Egypt and the Persian cat of Persia, have been domesticated by humans for 3,500 years (but not completely domesticated like dogs).

Ordinary cats: round head, short face, five fingers on the forelimbs, four toes on the hind limbs, sharp and curved claws at the end of the toes, which can be retracted. Nocturnal sex.

Hunt other animals in ambushes, most of which can climb trees. Cats have fatty pads on the soles of their toes so that they don't make noise when they walk, and they don't startle mice when hunting. The claws are in a constricted state when marching, preventing them from being blunted, and they will stick out when catching rats and climbing.

Pastoral cats. Pastoral cats. "It is a general term for domestic cats native to China. Among them, there are raccoon cats, orange cats (yellow civets), Sichuan Jianzhou cats (four-eared cats), three-flowered cats, white cats, black cats (black cats), black and white cats, yellow cats, Shandong lion cats and other breeds, among which the raccoon cats and yellow civets are the most common (gray civet cats are rarer), among which the orange cats are the most prone to fat, and the pure white long-haired heterochromatic Shandong lion cats are particularly rare and precious.

Judging from your **, you belong to the pastoral cat.

Pastoral cats. "It is a general term for domestic cats native to China. Among them, there are raccoon cats, orange cats (yellow civets), Sichuan Jianzhou cats (four-eared cats), three-flowered cats, white cats, black cats (black cats), black and white cats, yellow cats, Shandong lion cats and other breeds, among which the raccoon cats and yellow civets are the most common (gray civet cats are rarer), among which the orange cats are the most prone to fat, and the pure white long-haired heterochromatic Shandong lion cats are particularly rare and precious.

You're talking about British short, right? However, the English short color is blue.