In the Middle...

Ok, let's imagine. When you are petting a dog and a cat which you love the most in your life. At the same time, the dog can't click with the cat, or rather,they don't get along well. Once the dog bump into cat, the dog will non-stop pestering you for something, and the same thing happen once the cat see you. You can't hurt either of them... But They just don't behave themselves and always make you stuck in a "dunno what to do" situation. You are feeling just so bad to side either of them...You have the feeling to just scream at them and ask them to shut up their bloody mouht... So if you are the owner of the pet, how are you gonna do?????what are you gonna do???? Please teach me!!! I stucked in the middle!!!=/