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.
Shiranian size: These dogs are small and they are generally 7-12 inches (17.7-30.4cm) in height and weigh approximately 4-15lbs (1.8-6.8kg) when a full adult. Shiranian health problems: Generally the Shiranian does not have as many health problems as its full-bred parents have.