The crab does not recognize its owner. Because its IQ is very low, it can be said that it has no IQ, so in addition to recognizing food, it is still difficult for it to recognize its owner. Crabs are cold-blooded animals. Although the crab does not recognize its owner, long-term feeding can form a certain reflex, so that it will not resist feeding people and will not show fear. After raising a crab for a long time, although it does not resist the owner, it will not become dependent on the owner.

How to raise crabs:

1. To raise crabs, use a glass tank as a container, cover the bottom with fine sand and stones, and then fill the tank with river water. Or lake water.

2. Crabs are omnivores. If conditions permit, they can be fed red worms and egg yolks. Of course, crabs can also eat the offal of chickens and ducks or small fish and shrimps.

3. When cultivating crabs, you should pay attention to the appropriate amount of light. The embryo needs to be in a dark environment at all times in the early stage of development, while later development requires a certain amount of light. Insufficient light can easily lead to poor development of larvae, affecting molting and survival rates.