Brindle is a pattern of color--a bit more subtle than a tiger's coat , while usually a sort of striped pattern,and usually more uniform than you would say the color pattern is in a calico cat. Many pitbulls do have a brindle pattern, rough lighter stripes, but pitbulls may also be absent that color pattern and be all black or all brown, or have markings otherwise. Brindle is not a pattern exclusive to pitbulls.
