[gemy]

Well I have three dogs and one cat. Karma the cat was here first, my two blackies, do not chase the cat at all and they co-exist peacefully. Razz our Yorkie terrorizes our Maine Coone. He continually jumps on him, tries to play with him, and so far, despite repetitive corrections he still does. Karma is however a very gentle cat, and will untangle, or swat Razz and then go to his tower, to get out of Razz's way.

Make sure you keep the litter box up out of the Yorkies way, for some reason cat poo, seems especially tasty.

I agree with another poster, you have some good things going, the yorkie is one year old and lives with two cats already, so he is used to cats. How long have you had your Siamese? And do you have a tower he can climb to get out of doggie paws?