Chirping. Here's an interesting page on the subject:
http://www.hermit-crabs.com/chirping.html
Mine chirp almost every night
yes they cmmunicate bye barking
They Buck buck bacuck (cluck)
crabs eat every 6 hours for me but it could be different for other crabs crabs eat every 6 hours for me but it could be different for other crabs crabs eat every 6 hours for me but it could be different for other crabs crabs eat every 6 hours for me but it could be different for other crabs
other crabs
They sure can.
Yes. The females mainly attack each other. Also some crabs just play with other crabs and it looks like they are attacking.
sea birds, fish, octopuses, crabs, and other hermit crabs
no
humans and other crabs
they start to chase each other and then claw each other
to protect them from any other crabs or people stepping on them
yes ,birds ,other andbigger crabs