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.
The Samoyed is a medium-sized dog with a height ranging from 19 to 23 1/2 inches and weight from 50 to 65 pounds (23 to 29 kilograms). Samoyeds are squarely built, sturdy dogs, with a fluffy plumed tail curled over the back and draped to one side.