There are several varieties of the grey Pitbull Dog breed. Their color and size are different, and they are loyal and protective of their family and children. However, they share a lot of characteristics. For example, a Grey Pitbull is a diluted black version with blue eyes. They require lots of exercise and are extremely protective of children. They are excellent guard dogs and should never be left alone in the home. If you're looking for a dog to add to your family, it's best to look into the grey pitbull.