The domestic crab does not recognize its owner. There are many types of crabs, and there are about 600 types of crabs in China, including swimming crabs, blue crabs, frog crabs, Guan Gong crabs, etc. Generally speaking, pet crabs are mainly ornamental and are a kind of ornamental aquatic pets. Crabs have low IQ and are cold-blooded animals. Even if they are fed for a long time, it is difficult to develop feelings.

Precautions for raising crabs:

1. Pay attention to the living environment. You can build a simple residence for pet crabs, made of tiles and stones, which can provide a shady place for pet crabs in hot weather.

2. Keep the water clean. After feeding pet crabs, clean up food residues in time to avoid food residues from deteriorating in the water, breeding bacteria, and deteriorating water quality when the temperature is high.

3. Choose crabs of similar size to breed together. If the size difference is too big, they will easily fight when hungry, causing unnecessary losses to the pet owner.