The Bedlington Terrier is a breed of small dog named after the mining town of Bedlington, Northumberland in North East England. The dogs have blue, liver or sandy colouration, all three of which may have tan points. Bedlingtons carry what is known as the greying gene, a dominant trait carried on the G locus. The fur of the Bedlington creates a shape on the top of the dog's head known as a topknot. A fast dog with high endurance, the Bedlington Terrier is just as quick in water as it is on land, and their swimming speed rivals that of the Newfoundland. Bedlington Terriers 'have pace enough to keep up with the ordinary speed of a horse.' Because of the Whippet in their lineage, they have a tendency to bolt. Their versatility has been praised, with some dogs willing to ' a house-dog, a gun-dog, a rat-dog, a badger-dog, or, if needed,  bolt a fox...'