The Beagle-Harrier appears to be either a large Beagle or a small Harrier. It is a medium-sized dog, between 45 and 50 centimeters (18 and 20 inches) tall at the withers, and it weighs between 19 and 21 kilograms (42 and 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.
Beagle-Harriers were bred in France in the 19th century by Baron Gerard. The Beagle Harrier could be a mixture of two breeds, the Beagle and the Harrier, or the midpoint in breeding between the two breeds. The Beagle-Harrier was later imported into America in the mid-1800s to hunt rabbits. It was recognized by the FCI in 1974. The Beagle-Harrier can now be quite rarely found in France and is even more rare in other countries.