When first coming into my home, Sputnik was a bit shy ( to me mostly) but gets along great with my other two cats, but mostly with my Dog Trooper. Sput follows Trooper around all the time ( Trooper is not always crazy about it). My other two cats tolerate my dog, Sputnik worships the ground my dog walks on. If my dog is lying on the ground, Sput is next to him. If my dog is on the bed, Sput is next to him. Sputnik weaves in and out of Troopers legs while Trooper is standing. Sputnik is still a bit shy around me at times, unless I am on my computer and sitting at my desk. As soon as I sit down, Sput is on my lap. It is great to have Sputnik in my home. Thanks!