Why do cats have five fingers on their front paws and only four on their hind paws?

The original premise of mammals (in fact, all quadrupeds) was that their hands and feet had five fingers (toes). However, some guys started to increase their speed a little, and in order to run faster and more steadily, various foot bones fused, and reducing the number of fingers made the foot closer to streamlining.

The cat's four paws can be said to be genetically responsible, and they are shaped like this to grip things tighter. Catching some prey can quickly extend its claws and let the prey be caught.

The cat's thumb is small and positioned high, and it does not touch the ground at all when walking; The thumb of the hind paw is completely degenerated.

18 claws.

Cats have a total of 18 paws, five on each of the left and right forelimbs, and four on the left and right hind limbs. Cats' toenails generally grow faster, basically a week will become longer and sharper, cats don't like to be cut toenails, so we cut toenails gently, but also often cut. When cutting, pay attention to the blood glands of the toenails, otherwise the blood will be cut and the cat will be shadowed.

Frequent nail clipping can also allow owners to detect paw abnormalities early, such as cat paws injured.

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

Cats have five toes on their forelimbs and four toes on their hind limbs.

Cats can climb trees because they have fatty pads at the bottom of their toes, sharp nails and claws that can be retracted and extended. Reaching out while catching rats and climbing is good for grasping trees.

And the cat is agile, good at jumping, can walk casually on the high wall, light jumping, it only needs to slightly change the position and height of the tail to achieve the balance of the body, and then use the strong muscles and strong joints of the hind feet to jump agilely, the cat is good at climbing high, even if it falls from a high place or jumps down, it can also rely on the tail to adjust the balance, so that the padded limbs are on the ground.

Cats certainly have 4 paws, and cats can move freely in trees. When a dog chases, a cat climbs a tree to avoid the dog's pursuit. The cat can climb trees quickly because it has four claws, each of which has a plum-like pad, each with six petals, the first four lobes are curved, and each lobe has a hook-like nail on it, while the middle one has no nail.

Usually the nails are retracted into the gap between the pads of the flesh and cannot be seen, but when catching prey or grasping something, they stick out and grasp the target steadily, so they can quickly climb trees.

Four paws with only five petals each.

The kitten's footprints are drawn like plum blossoms in the snow.

When the kitten walks on the snow, it will leave a series of footprints, and the footprints of the kitten are like plum blossoms with a few small flower bones next to it, with five petals on the front foot and four petals on the back foot. Kittens have fatty pads on the bottom of their toes, and sharp claws on the ends of their toes, which usually do not stretch out and are silent when walking.

1. The cat's paws belong to the end of the circulation of its body, and the usual temperature is slightly lower than the normal body temperature of the cat. When the cat is in a low temperature environment, the cat's body heat production mechanism will be blocked, and it is normal for the cat's paws to be cold, as long as the cat is kept warm in time.

2. Usually pay attention to determine the reason for the cold cat paws, and the cat paws will also be cold in summer. This is because when the weather is very hot, cats will habitually lie on the cold floor, which will cause cold paws.

3. The role of the kitten's paws: The kitten's toes have Zhizen fatty meat pads, sharp nails at the ends of the toes, and the claws can be indented and extended. Cats retract their paws when resting and walking, and only stick out when catching mice and climbing, and are prepared to prevent their nails from being blunted.

The kitten's ability to walk casually on a high wall and leap lightly is not only due to the kitten's outstanding reflexes and sense of balance.

1. The bottom of the cat's toes.

Cats have fatty pads on the bottom of their toes, so they walk silently, do not startle mice when catching mice, and have sharp nails at the ends of their toes. The claws are capable of retracting, collapsing, and extending. Cats retract their paws when resting and walking, and only stick out when catching rats and climbing, preventing their nails from being blunted.

2. The tail of a gecko.

When a gecko is frightened or when you go to catch it, as soon as you touch it, its tail will immediately snap off, and the gecko will take the opportunity to escape. This phenomenon is called "self-cutting" in zoology, also known as "self-cutting", "self-mutilation" and "self-cutting".

3. Chameleon's.

The chameleon is good at changing the color of its body at any time according to the change of the environment. The discoloration is good for both hiding oneself and catching prey.

4. The voice of a bat.

Most bat calls have frequencies between 20 and 60 kHz. Sound waves with frequencies below 20 kHz are larger than those of most insect sound waves, so they pass through the insect without being reflected back; Another advantage of using particularly high or low frequencies is that these frequencies of sound waves are difficult to perceive by prey insects, so that bats can catch more insects.

5. Spider's spinning.

Spiders have a special spinning apparatus in the middle of the ventral surface or the posterior end of the ventral surface, and there are 8 kinds of silk glands that are drawn out of the body through the spinning tube, and the size and number of silk glands increase with the growth of the spider and the gradual molting. Spider silk is a bone protein, which is very sticky and strong, tough and elastic, and hardens when exhaled by air.

Cats are many people like to raise pets, cats have a cold character, but the appearance is very cute, friends have observed its paws, why does it have 5 claws on the front legs, only 4 on the hind legs?