They carry water in their shell and use it to breath. Serve a balanced diet. Bathe crabs once a week or more in warm water. Crabs need to exercise every day. Provide new, clean and larger shells for crabs to move into.
Hermit crabs have claws that can pinch.
Hold the crab carefully by the shell. Keep the crab's home clean. Crabs eat at night and bury their food. Crabs normally live in groups. Its good to keep more than one as a pet.