History of Colby Bloodline
John P. Colby started his line of Pit Bulls in 1889 from the best dogs that were brought to the United States from England and Ireland.
The bloodline is the oldest, purest, and rarest bloodline of Pit Bull.
Many of today’s dogs have some Colby blood in them, but it is rare to have a dog that is 100% pure Colby. Cccasionally the family will release a litter of puppies, but not often.
In the 1930s when the AKC was working to add the American Pit Bull to their registry under the American Staffordshire Terrier name, they used Colby’s ‘Primo’ as a standard for the breed.
The Colby bloodline has a first impression of great strength, as it is a muscular and bulky dog. The muzzle should be a medium length and fall away from below the eyes. The neck is heavy and also of medium length. The shoulders are wide with sloping shoulder blades. The tails are short in relation to the dog’s size. The dog’s set is low and tapered to a thin point.
The average male Colby is about 18 to 19 inches at the shoulders and about 17 to 18 inches for a female.