I think its kinda cool when the critters learn stuff from each other. For instance - Clooney - the all but silent ferret has learned from Miss Madison that he can make noise so now when he plays with Oliver he squeaks and screeches. Emma has learned to clean her face with her paws from her kitty siblings. Aggie has become quite chatty thanks to learning that from Phoebe. Phoebe learned fetch from Emma and now she is much more consistent about bringing the ball back when we play than the dog is.... its fun to watch them interact and pick up traits from one another.