I. Ma 1. Horses are herbivores. Tamed by human beings 4000 years ago, it was an important tool for ancient agricultural production, transportation and military activities.

2. Every kind of horse is different in size. The heavy variety can reach 1200 kg, 200 cm high, and the small variety is only 200 kg, 95 cm high.

3. Pocket horses are only 60 cm tall, with flat and straight heads, short ears, long limbs, well-developed bones and muscles, and hard hooves, and can sprint on hard ground.

4. The coat colors of horses are mostly chestnut, brown, blue and black. The coat changes in spring and autumn. There are developed sweat glands to regulate body temperature and have strong ability to adapt to the environment.

Second, the donkey 1, the donkey and the horse are very similar, but not as powerful and magnificent as the horse. The body color is mostly taupe, the head is big and the ears are long, the chest is slightly narrow, the limbs are thin and the trunk is short, so the height and length are roughly the same.

2. Donkeys are strong, resistant, not easy to get sick, docile, hardworking and obedient to service.

There are three kinds of donkeys: big, medium and small. The excellent breeds in China are Lv Zhong Donkey, dezhou donkey Donkey, Guangling Donkey, Biyang Donkey and Xinjiang Donkey.

4. The body heights of Guanzhong Donkey and dezhou donkey are above 130cm, Biyang Donkey is between1130cm, and Donkey is between 85- 1 10cm.

Mule 1. Mules are descendants of horses and donkeys, including mules and mules. Donkeys and mares have mules, and donkeys and mares have mules.

Mules are relatively bigger, stronger and more flexible, but they can't have children. Mules are relatively small, but there are few birth records.

Mules are more stubborn than donkeys and smoother than horses. Usually, mules are more gregarious than horses. They are bold, lively and curious.