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 Mature male Bulldogs weigh about 50 pounds; mature females about 40 pounds. Show dogs may be about 10 pounds heavier. They stand 12 to 15 inches at the shoulder. Personality Sociable and sweet, but with a reputation for courage that makes him an excellent watchdog, the Bulldog is a lover, not a fighter.