The Beagle Harrier appears to be either a larger Beagle or a smaller Harrier. It is a medium-sized dog, between 45 and 50 centimeters (18 to 20 inches) tall at the withers, and it weighs between 19 and 21 kilograms (42 to 46 pounds). Its coat is usually tricolor, featuring the colors fawn, black, tan, or white. There are also grey-coated (tricolor) Beagle Harriers. The Beagle-Harrier’s body is usually muscular and its coat smooth and thick.

The Beagle Harrier is generally good with children and other pets. They are loyal, have lots of determination and are calm and relaxed when at home, making them a good family pet. They are a hunting breed and so require a lot of exercise and space.