A mixed breed dog is just what it sounds like - a mix of one or more different types of breeds. For the most part, the history of a mixed breed dog’s ancestry is not known, but guesses can be made for the parent breeds based on the dog’s appearance. Tracing a mixed breed’s family tree back any farther than that is a difficult to impossible task.
Large-sized mixed breed dogs weigh more than 50 lbs. Because dogs inherit characteristics from either or both parents, and in the case of a mixed breed dog the parents may be unknown, it is difficult to predict their temperament. But if your mixed breed puppy keeps growing and growing and eventually tips the scales at greater than 100 lbs., it’s safe to say he’s got some giant breed in him, and his color may hint more specifically at his parentage.
Due in part to their “hybrid vigor,” mixed breed dogs tend to be less prone to as many genetic diseases as their full breed cousins, but they can still develop hereditary and congenital conditions, including hip problems such as hip dysplasia; elbow problems such as elbow dysplasia; digestive disorders such as gastric dilatation-volvulus (GDV or bloat); knee problems such as cranial cruciate disease; and thyroid conditions such as hypothyroidism.
Thankfully, Petplan pet insurance covers all hereditary and chronic conditions as standard. Which means if your large mixed breed inherits a combination of trouble from his parents, you're covered.