Lick Granuloma: A skin condition caused by prolonged licking at a specific area, in most cases, a leg or a paw.

Line Breeding: The practice of mating a dog to a member of an earlier generation of the dog's bloodline.

Lippy: Pendulous lips or lips that do not fit tightly.

Litter: The puppy or puppies of one whelping.

Litter Complement: The number of puppies of each sex in a litter.

Litter Registration: Recording a litter of puppies with a dog association.

Liver: Used to describe many breeds, this deep, reddish brown color includes various shades of chocolate brown, from light to very dark. Color definitions may vary by breed. Always check the breed standard for the definitive color description.

Livestock: Domestic animals, such as cattle or horses, raised for home use or for profit, especially on a farm.