An estimated lifespan of a Yorkshire Terrier is 12 to 15 years. Compared to some other dog breeds, especially big dogs, these dogs are more likely to spend many happy years with their owners. Of course, there are still some health issues that a Yorkie might develop, such as Patellar Luxation, hypoglycemia, and eye infections. All pet owners should take care of their puppies’ regular vet visits, exercise, and nutrition, to make sure their dogs are living in the best conditions possible.