We have had the same cat for over 20 years he is great with all of my babies. He sleeps with them he plays with them. He has never scratched any of these guys. He has protected him self against other dogs when he is out side but, he acts like he is one of the furbabies. It is too funny to watch him let the babies wash his face... They wrap their little front paws around his neck and hold on while he just stands there it's almost like he is saying "alright hurry up and get it over with"...
Even then he has never acted aggressive toward them. I think it depends on the disposition of all of the animals. My furbabies are all very loving and they want to kiss everyone. Shadow is very tolerant of everything. But, we have had him since he was little and when we first brought Max home we let them get aquainted slowly on Shadows terms...I am sure that doesn't make any sense but, we just let Shadow come to meet him on his own.