Temperament can vary greatly within a breed or combination of breeds. Typically, a well-bred show dog will produce well-behaved, well-bred dogs that can be great in the show ring or as pets. Poorly bred or interbred dogs and puppies typically come with certain inherited behavioral issues or temperament issues. Some of the “hybrid” mixed-breed dogs can have very significant anxiety, exuberance and even aggression due to their breeding and upbringing.