1. The best way to keep crabs from losing their legs is to put them in a pot with cold water when steaming, and then steam them slowly with a small fire after the cold water enters the pot, because it takes a long time to heat the water with a small fire, so during this time, crabs have enough time to adapt to this link, so they will not struggle for a long time, so the steamed crabs will not lose their legs.

2. A small number of crabs grow and breed completely in fresh water, and most of them live under the rocks in mountain streams. A few crabs, such as ground crabs, can adapt to life on land, make holes in wet mud holes and migrate to the sea during breeding season. Most crabs are omnivorous, and some crabs are carnivorous. For example, swimming crabs can prey on fish, shrimp and mollusks. A few crabs, such as window crabs, scrape or filter algae and organic debris.