We have three dogs, three cats and two guinea pigs. And we are lucky because they all get along well. At one time we did have two dogs who didn't get along and we had to keep one in one room and the other dog in another room. Keeping them separated was not easy.But we did it because we loved both of them and made it work.
Our dogs get along with each other, and with the cats and the guinea pigs. Our cats seem to get along easily with the guinea pigs too. In fact they all try to curl up and sleep together when they are all together.
Have you had pets in the past that didn't get along or do you currently have some that don't? How do you deal with it? Separate rooms? Did you keep the pets?