A ewlap is a flap of skin that hangs beneath the lower jaw of tetrapods, that is, amphibians, reptiles, birds, mammals and their relatives. While the term is usually used in this specific acception, it can also be used to include other structures occurring in the same body area with a similar aspect, such as those caused by a double chin or the sub-mandibular vocal sac of a frog. In a more general manner, the term refers to any pendulous mass of skin, such as a fold of loose skin on an elderly person's neck, or the wattle of a bird. There are also dewlaps on dogs such as the English Springer Spaniel, the Basset Hound or the Mastiff. The dewlap is also found on female rabbits, such as the New Zealand white rabbit. While pregnant, the female rabbit will pluck fur from the dewlap to line a nest for her babies. Although these masses can be referred to as dewlaps, they are formed by stored fat. The Dewlap is also seen in both genders of moose, which may or may not be an indicator of status.