Dogs and cats are two distinct species that regard one another as potential prey. But that doesn’t rule out the possibility of them getting along. Many families have demonstrated that dogs and cats can be great companions.  Keep them apart as much as possible. If you have the space, make sure your cats have a place to escape – vertical space is ideal. Remove the cat’s belongings out the dog’s reach; sometime they refuse to eat if they were too close. Don’t be shocked if it takes them some time to adjust, and spend as much time as you can with the cats without the dog.