i have two cats and two sheps that dont get on at all, so the cats have two rooms during the day with lots of toys and litter boxes, and at night the dogs are in with us and the cats they have the run of the house, one of my sheps hates cats and no way can i let him near them , in a morning they go back into there rooms of there own accord and we find that works very well the dogs now know they are not allowed in those two rooms,.