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
Belgian Hare especially in cold and wet weather for the outdoor rabbit. A recommended practise is to place the straw on top of a layer of the hardwood shavings in the sleeping compartment, in order to ensure warmth and insulation for an outdoor Belgian Hare. The rabbit home should be cleaned out weekly and any old food removed. If it is necessary to wash the home then only use a cleaner specifically designed for cleaning rabbit hutches. The Belgian Hare has a short coat and if kept clean, requires little grooming other than an occasional rub over to remove any dead coat.