Thanks for the responces!
It never dawned on me to just goggle dsney pluto... but I finally did and it come up with him being a bloodhound.
My reason for asking is b/c DH and I are on our way home from WDW and we were in the parks yesterday and saw pluto and I told him if we got a yellow lab we have to name him pluto. and DH responce was if you can find out what kind of dog pluto is we will name a dog pluto!!! WOOT WOOT!!!! We do like bloodhounds, but I don't know what we're going to get just yet. We have a springer spaniel, that turned 2 in March. We shall see!!!