Mimi only "shows" me her hairballs when she is mad...like if she has to stay inside for a couple of days when we're away. And she is an excellent groomer herself, but she does have incredibly long hair. In our short time together, I haven't seen Butter throw one up either. Maybe they are using their good manners and doing it outside rather than in the house.

I don't think it is too unusual to not seem them, and I don't even use any hairball remedies...maybe I should!