1, giraffe's tongue can lick deep into the ear. Used to clean your ears.

2. When hippopotamus takes a bath in the sun, it will produce a "sunscreen" for the skin.

Although spiders have eight legs, they have claws.

Toucans in the zoo need tea. Most toucans in captivity suffer from diseases, especially diseases that lead to excessive iron due to less tannic acid intake. In order to prevent or treat iron overload diseases, zoo managers will make tea for toucans.

5. The sex of crocodile is determined by temperature. When they were born, they were all asexual. However, in the process of incubation, sex should be selected according to the ambient temperature. Therefore, if you find a crocodile's nest in the wild, you should know that the crocodile's nest is built on leaves and the temperature is high (close to 34 degrees), which is a male's nest. A nest built on a wet swamp is a mother nest. You can choose whether to eat male eggs or female eggs.