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.
An adult dog weighs between 20 and 35 kilograms (44 and 77 lb). This breed, relative to size, is heavier-boned than any other. This breed, like its ancestor the Bloodhound, has a hanging skin structure, which causes the face to occasionally look sad; this, for many people, adds to the breed's charm.