Rabbit, zebra, hippo, elephant, which is different?

Elephants are mammals. They are huge, with long noses, taupe skin and ivory teeth, which are obviously different from other animals. They belong to the order Monopoda, while rabbits, zebras and hippos all belong to the order Bipoda, which is the most obvious difference between them.

Elephants also have unique behaviors. They like swimming, digging holes with ivory, and even patting the ground with their tails as an attack or warning. They also have a strong memory and can remember people they met once.

Besides, elephants live in groups. They will form a large group, led by a female elephant, and other members will get together to form a special social structure.