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 Neopolitan Mastiff is a large guardian breed native to Italy. Romans once used this breed as war dogs. The height of this giant breed ranges from 26 inches to 30 inches and have a weight of 54.4-90.4 kg. The massive Neopolitan Mastiff dogs have loose skin and thick wrinkled face. They have a wide flat head and large nose.