The cerebellum can also be divided in three parts based on both phylogenetic criteria (the evolutionary age of each part) and on functional criteria (the incoming and outgoing connections each part has and the role played in normal cerebellar function).
Although 16.5 inches (42 cm) is the preferred height for male dogs, a range from 16 to 17.5 inches (41 to 44 cm) is allowed; for females, the preferred height is 15.5 inches (39 cm) and the acceptable range is from 15 to 16.5 inches (38 to 42 cm).Both genders must weigh between 17 and 23 pounds (7.7 and 10.4 kg).n 1948, a Bedlington Terrier known as Rock Ridge Night Rocket won best in show at the Westminster Kennel Club Dog Show. The breed has a high instance of copper toxicosis, but with the exception of eye problems, it is mostly free from health complaints.
The Rat Terrier is a small and sturdy dog and should be between 13 to 16 inches in height. The UKC doesn't have a specified weight for standard Rat Terriers as each individual dog has a different weight for their height. The Decker Rat Terrier is slightly larger than the Rat Terrier and should range between 22 to 40 pounds. A male should be 16 to 19 inches in height while a female should be 16 to 17 inches. The miniature Rat Terrier should weigh 10 to 18 pounds and should not be larger than 15 inches in height. The toy Rat Terrier is an even smaller version of the breed.