Hermit crabs are definitely one. I made an account just to reply to this comment, I'm very passionate about my crabs. This comment made me a bit peturbed. I came here for advice on firebelly toads, because I want a pair. However, my parents say that I can't have the roads unless I give up my crabs. I was hoping I could somehow keep them together, however I don't see that as a possibility now.Welcome aboard Yes I agree there are certain animals that children shouldn't be allowed to raise on the their own without help.