I have to say that when Smidgen arrived he ran behind the furniture and as he passed from one piece to the next hurled abuse a the dog. Next day they were sharing a bed. Day after, Esther arrived, jumped out of her box, head-butted the dog and went over to Smidgen, hissed back at him (he was the one hissing) and a couple of days later I had to stop her suckling him. Still there are cats and cats.
Claudius, who came into a household of three adult cats, had them all lined up in the hall looking non-plussed while he stretched out in the sun on the spare bed ...