About 50 million years ago, the ancestors of horses appeared. After evolution, horses gradually became bigger and began to live in a wider grassland. The primitive horse has four toes. In order to adapt to the grassland environment and make it run, the three toes gradually degenerate and the middle toe evolves into a hard hoof. Horses have a keen sense of smell and hearing, but poor eyesight. They can only distinguish basic colors such as yellow, green, cyan and red. The gestation period of horses is generally 1 1 month, and most of them give birth to ponies in spring. A newborn pony can stand up and walk by itself in 4-5 hours.

Physiological structure of horses

Horses and other horses have characteristics suitable for fast running. Usually, horses have eyes with wide vision on their long heads. Can help them find their enemies while eating. A strong body has a long neck covered with a hard mane. Each leg is slender and each foot has hooves. Horses have big teeth for biting people and tails for driving away flies.

develop

Over time, horses have evolved from having four toes on each foot to having only one toe. The earliest horse was a mammal about the size of a dog that lived in North America 55 million years ago, with four toes open to prevent it from falling into the ground. With the change of climate, grass is more and more widely distributed, and some horses that can run quickly begin to appear. With the decrease of foot bones and toe bones, the limbs become lighter, which can make them run faster and get rid of the enemy. Modern horses have only one hoof on each foot to protect their toes.

Common zebra

Chiroptera horses are similar to domestic horses in shape and size, with the same black and white stripes all over, and the side stripes extend all the way to the abdomen. In the buttocks, broad brown lines are mixed with narrow light brown lines, especially the hidden lines of limbs and legs. There are black tufts at the end. The neck bristles are stiff and erect, and the pregnancy lasts for 345~390 days, and each child gives birth to a colt, with a life span of 20 years. From northern South Africa to Sudan, Ethiopia and Somalia.

The only wild horse left.

On the earth where we live, there are more than 350 kinds of wild horses. However, due to the changes of nature and the influence of human activities, especially the short-sighted exploitation of nature and the killing of wild horses, so far, 349 species of wild horses have been extinct, leaving only one species, which is absolutely realistic.

The "only remaining" is Mongolian wild horse, which is produced in Junggar Basin, Manas River Basin and Cobuduo Basin of Mongolia in Xinjiang, China. From this point of view, China may be the only country with wild horses left in the wild.