<P> The term "wolfdog" is preferred by most of the animals' proponents and breeders because the domestic dog was taxonomically recategorized in 1993 as a subspecies of Canis lupus . The American Veterinary Medical Association and the United States Department of Agriculture refer to the animals as wolf--dog hybrids . </P> <P> Recognized wolfdog breeds by FCI are the Czechoslovakian Wolfdog and the Saarloos Wolfdog . </P> <P> One of the issues that many researchers and wolfdog communities are faced with is identifying wolfdogs from pure dogs and any of the wolf species mixed into the hybrid . The most common method used by various wolfdog communities is phenotyping, a method that involves observing the animal's physical features . This method is often favoured for many in determining the degree of wolf and northern spitz - type dog that is in a hybrid . However, a lot of criticisms have been made by opponents within some communities who tend to point out that phenotyping cannot always determine the wolf - contents accurately . Another challenge involves determining exactly the domestic breeds and wolf subspecies involved in the admixture due to the fact that dogs are known to come in various breeds while gray wolves in turn come in various subspecies with many different regional ecotypes hence have different physical features depending on the subspecies used in the breeding . Although wolves are often mixed with spitz types such as Siberian Huskies, Alaskan Malamutes, and German Shepherds, hybrids between wolves to non-Spitz type dogs such as Poodles, Pit bulls, and Great Pyrenees also exist, the latter hybrids often having less lupine features . </P> <P> Evidence for prehistoric domesticated wolfdogs in the Americas dates back at least 10,000 years while fossil evidence in Europe points to their use in hunting mammoths . </P>

What does a wolf hybrid dog look like
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