I've posted this before but for those new ones having trouble with their two Yorkies fighting I have found a good book that is helping us.
The title is: "Feeling Outnumbered? How To Manage and Enjoy Your Multi-Dog Household" written by Karen B. London, Ph.D. and Patricia B. McConnell, Ph.D.
It's just a small booklet with 45 pages so it's a fast read but I've gone back to it many times. You have to read it all the way through to get the FULL benefit of the book.
If your local book store does have it, ask them to order it for you.
