European hare adaptions for high speed running in hares include wider nostrils and larger hearts. In comparison to the European rabbit, the hare has a proportionally smaller stomach and caecum. This hare is one of the largest of the lagomorphs. Its head and body length can range from with a tail length of . The body mass is typically between . The hare's elongated ears range from from the notch to tip. It also has long hind feet that have a length of between . The skull has nasal bones that are short, but broad and heavy. The supraorbital ridge has well-developed
Domestic rabbit generally, especially domestic ones. More recently, the term "kit" or "kitten" has been used to refer to a young rabbit. A young hare is called a "leveret"; this term is sometimes informally applied to a young rabbit as well. A group of rabbits is known as a "colony" or a "nest". The study of rabbit genetics is of interest to fanciers, the fiber & fur industry, medical researchers, and the meat industry. Among rabbit fanciers, the genetics of rabbit health and diversity are paramount. The fiber & fur industry focuses on the genetics of coat color and hair properties. In