About the appearance characteristics of dogs, species, action characteristics, life habits, and rela

If you could raise small animals, what would you want to raise? Write your reasons and try to write more. Appearance characteristics, living habits.

No matter what breed or size the dog, they have a keen sense of smell, a keen sense of hearing, and a high eyesight for moving objects.

Dogs have a keen sense of smell and a keen sense of hearing。Dogs can distinguish between very small and high-frequency sounds (ultrasound) and are very good at judging the source of sound. Its sense of hearing is 16 times that of a human, and when a dog hears a sound, due to the sympathetic effect of the ear and the eye, it can completely see six ways and hear in all directions.

At night, it maintains a high level of alertness even when it sleeps, and can distinguish sounds within 1 km.

When the light is dim, dogs have better eyesight than humans, and dogs are natural carnivores that live by hunting, so they also have considerable eyesight in dark places. Dogs' eyes can see short-wavelength colors, and dogs' corneas are larger, allowing more light to enter their eyes, making it easier to see in dim light.

Dogs' habits

When dogs live in groups, there is also a "hierarchy". Establishing such an order can maintain the stability of the entire group and reduce the vicious fights and wars caused by food, living space, and competition for the opposite sex. Before the dog lies down, he always walks around and makes sure that there is no danger before he sleeps peacefully.

Dogs are not easily woken up by acquaintances and owners when they sleep, but they are still sensitive to unfamiliar sounds. After the dog is awakened from sleep, it often seems to be in a very bad mood, very dissatisfied with the person who woke it up, and the dog that has just been woken up is sleepy-eyed, and sometimes even the owner can not recognize it.

Dogs mainly identify their owners based on their sense of smell, identify the sex of the same kind, distinguish directions, and food. Police dogs can also help humans find criminals, drugs, victims who have collapsed in buildings, etc. 2. Hearing:

Dogs can hear at the upper limit of more than 40,000 Hz. Dogs can distinguish between very small and high-frequency sounds, and they are also very good at discriminating sounds. When the dog sleeps, it often sticks one ear to the ground to maintain a high degree of vigilance, and can distinguish sounds within a radius of 1 kilometer.

3. Vision: Dogs have a high eyesight on moving objects, and they are worse at static, and the adjustment ability of dogs' eyes is one-fifth to one-third of that of humans. Dogs have a deep perception of the intensity of light, and often show painful and panicked expressions for dazzling bright lights.

Dogs are colorblind, and in the dog's eyes there is only a black and white world with different shades of gray.

Hello, dogs run and walk on tiptoes, the structure of the front and rear paws is not the same, the front paws have 5 toes, the hind paws have 4 toes, the dog's paws are not like cats and some other animals, can be retracted and walk.