A wolf dog is any canine with both domestic dog and wolf in its recent genetic ancestry and can result from any of the following parent combinations: a pure wolf and a pure domestic dog, a pure wolf and a wolf dog, two wolf dogs, or a wolf dog and a pure dog. Any breed of dog or subspecies of wolf are capable of producing viable offspring, though the chances of a toy poodle-wolf mix is extremely unlikely without human intervention in the breeding process due to the size difference between the parents.
Though it comes as a surprise to many, wolf dogs are almost exclusively a consequence of human manipulation. In the wild, wolves are generally, though not always, monogamous and extremely territorial by nature, viewing most other canines (wolves outside their pack, coyotes, and dogs) as competition for the resources necessary to survive. As a result, most wild wolves would likely react aggressively to a dog entering their territory, chasing them away or attempting to kill them rather than accepting them into a pack or viewing them as a potential mate. In addition, both male and female wolves are only capable of breeding once a year, so the likelihood of a free-ranging dog encountering a wild wolf of the opposite sex alone during breeding season (sometime between January and March) is very low.
So, if this is not a naturally occurring phenomenon, why do people intentionally create wolf dogs? There are numerous reasons, ranging from wanting to control a piece of the wild to mistakenly believing that they are creating a better “guard dog” to simply liking the “wolf look.” There is a misconception that breeding wolves and domestic dogs together will create the ideal blend of wild and domestic traits in the pups. However, these attempts to “reinvent the dog” hardly ever result in the ideal creature that most people are looking for.