Like many cat lovers I have a multiple cat home. They are age 1 year to age 10 and they do not see eye to eye on everything. Daily I need to break up cat hissy fits fur yo one of them being territorial with their toys, litter box, or if a cat walks into their space.
I have talked at my cat meetings and found out that many people have multiple cat homes and that their cats do not get along all of the time.
Cats are funny, they can sleep together, groom each other and seem like best friends but then out of the blue their tempers will flair and before you know it you hear hiss, snarl and the claws are brought out. Kitty wants to fight with their best buddy and if you do not run to break it up the cats may go at it and the fur may fly.
Granted we may think that the fight was brought on for no reason but for a cat that is territorial that is a just reason. Your cat may be suffering from stress from a new person in the house, or a new pet. Plus any movement of furniture or their litter box is enough to cause your cat to be upset. Know that any changes to their routine is enough to cause your happy cat to feel anxious and you bet they will take their frustrations out on another cat or they will mark your sofa, wall or chair.
It is safe to say that I have tried a variety of things to bring harmony back to my multiple cat home and found that the best product was the least expensive and it worked like magic. My veterinarian suggested that I buy Feliway Diffusers at Chewy.com, because this online pet store offered the best prices. I searched and found the website and bought the products needed for my home.
I plugged the diffusers into my electrical outlet and when they heated up it released a kitty pleasing pheromone into the air. This pheromone calmed all of the cats down and brought harmony back to our home.
Know that I recommend this product because I found that it it works. You can view this video and it will show you the before and after effects of the feliway diffuser when used as a treatment for a cat that is feeling anxious.