Dexters can be solid red, black, or dun. They do not have spots, but some white on the tail and underside of the belly behind the navel is common.
Dexters may have horns or they may be polled (naturally hornless). Some people de-horn their non-polled Dexters.
Dexters are one of the smallest cattle breeds in the world. But even within the Dexter population, there is some variation in size. Typical height ranges can very between and within the populations of chondrodysplasia carriers ("short-legged Dexters") and chondrodysplasia non-carriers ("long-legged Dexters").
Cows: Typical range in height is 34-46 inches, with a majority in the range of 36-42 inches, measured at the hip.
Bulls: Typical range in height is 36-50 inches, with a majority in the range of 38-44 inches, measured at the hip.