Having webbed feet has nothing to do with not being 100% Yorkie, some humans are born with webbed feet and this phenomenon can occur spontaneously. If someone bred your dog some of the offspring would in all probably have webbed feet. These offspring could be bred again till all resulting offspring had webbed feet. This sort of thing happens all the time naturally in nature where a certain trait is beneficial to survival. In dogs, humans have acted in the natural selection process, and the result is the different breeds that at one time all resembled the wolf. Newfoundland, Chesapeake Bay Retriever, Portuguese Water Dog, Field Spaniel, and German Wirehaired Pointer are among the breeds selectively bred to have webbed feet. It is possible that your dog has one of these breeds in his background especially since he is also a little on the large size, although Yorkies were at one time 15 pounds. Many breeders have been known to fudge on the AKC applications, and now that DNA is in use, this will happen less in the future. It would be interesting to know if he enjoys the water.
Welcome to Yorkietalk, we have all sorts of unusual little guys here.
