Our little kitten Sachmis fights our old cat Pasch for the rights to the comfy chair (although really she just wants to play). Pish Pasch doesn’t stand a chance as she wouldn’t really hurt the little one, whilst the little one has no qualms about fighting dirty =P Don’t worry, they don’t hurt each other (in fact after being together for nearly 2 weeks they’ve started cuddling), and we usually put the kitten in a separate room if she gets too hyper with the big cat.