I have always thought it was never, with exception of babies. But I have been reading and talking with some people and have heard differing oppinions. I have always kept my Chams sepreate...but would be interested in knowing if there are any species that can be housed as a community (aside form the little pygmies). I was told you can keep several female Panthers in together if the area is big enough. I know this seemes like a newb thing, but it is something I never thought about as I always wanted my Chams to have their own space.