Years ago, I lost my own personal pit bull to a fast growing brain tumor. Unfortunately, in both human and veterinary medicine, brain tumors can result for no known reason. While genetics and environment may potentially have a role, the underlying cause for brain tumors is typically unknown.
The Havanese does not have to be really light. Depending on the size of a Havanese the weight ranges from 7-22lbs. I own a very athletic agility Havanese that stands 11â³ at the withers. She weighs 18-20lbs depending on how much training she does and her muscle mass. From the AKC Standard.
Size: Bernese Mountain dogs are considered large dogs and weights of 80 to 120 lbs are not unusual. Dogs 24.4 - 27.6 inches (62 - 70 cm); bitches 22.8 - 26 inches (58 - 66 cm). Height is measured at withers. The stocky, well-balanced appearance is considered a must.