My 20 lb. Shih-Tzu/Westie is six years old. Her winter hair clipping is kept 3-4 inches long and is grey and white in colour. When sporting her summer cut (which is taken right down) she is brindle and that's when the tan colour shows up. Her name is Suzie and we live in the province of Ontario in Canada. I had trouble registering. I had trouble posting (could not find where to post). Just as I was about to quit I came up with this page. It'll be interesting to see if I can find it again. I am looking for an answer to Suzie's tongue. A black spot (just under the size of a dime) in the shape of a heart or spade has appeared on the tip of her tongue. Anyone know what caused this or what it is? Thanks for reading my posting.