Crabs will not recognize their owners after being raised for a long time. Crabs are not that intelligent and cannot recognize people. Even if you have been with the owner for a long time, you will be familiar with the owner's existence and have some interactions with the owner, but this is also a conditioned reflex and will not really recognize the owner like a dog, and may also have a negative reaction to the owner. Aggression.

How to raise crabs

1. Crabs can be raised in fish tanks, plastic basins, cement pools, etc. If you want to keep crabs in a fish tank, you need to put some stones and fine sand at the bottom of the tank, and pour in tap water that has been dried one day in advance. The amount of water will just cover the crab shell. You can also plant some aquatic plants in the fish tank to provide Crabs create a good living environment.

2. Because crabs are social animals, you can keep several crabs together. This can improve the survival rate of crabs, but you need to keep crabs of the same size together.

3. Crabs are omnivorous animals and are relatively easy to feed. You can usually feed them egg yolks, animal offal, small fish and shrimps, cabbage, dried beans, pumpkins, potatoes and other foods. Feed 1-2 times a day, and the amount is based on how much the crab can eat in half an hour.

4. Crabs need to be cleaned regularly. When cleaning, first fix the crab's body with your hands, and then use a toothbrush with some shower gel or soap to start scrubbing. Carefully scrub the dead corners of the crab. Just rinse it with water and clean the fish tank at the same time.

5. When raising crabs, you need to change the water every 3 days. After changing the water, you can also sprinkle an appropriate amount of quicklime into the water, which has the effect of sterilization and disinfection.