Your two cats are the best of friends — lounging together, looking out the window together, and generally content to share the house with each other. But then one of them goes to the veterinarian and is out of the house for an hour. Or the two of them need to be boarded for a couple of days. You’d think when things go back to normal, the cats would be relieved and happy. But often, the opposite happens. Fighting breaks out. It’s like the two feline pals never knew each other and are now enemies.
How to remedy the rift
You cannot reason with a cat or expect him to just “snap out of it” when he goes off on his housemate. Instead, you have to keep the two cats apart for a while.