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Rats are bigger than most Old World mice, which are their relatives, but seldom weigh over 500 grams (17 + 1 ⁄ 2 oz) in the wild. [2] The term rat is also used in the names of other small mammals that are not true rats. Examples include the North American pack rats (aka wood rats [3]) and a number of species loosely called kangaroo rats. [3]
The fancy rat (Rattus norvegicus domestica) is the domesticated form of Rattus norvegicus, the brown rat, [1] and the most common species of rat kept as a pet.The name fancy rat derives from the use of the adjective fancy for a hobby, also seen in "animal fancy", a hobby involving the appreciation, promotion, or breeding of pet or domestic animals.
On average, captive animals (especially mammals) live longer than wild animals. This may be due to the fact that with proper treatment, captivity can provide refuge against diseases, competition with others of the same species and predators. Most notably, animals with shorter lifespans and faster growth rates benefit more from zoos than animals ...
The brown rat (Rattus norvegicus), also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat and Norwegian rat, is a widespread species of common rat. One of the largest muroids, it is a brown or grey rodent with a body length of up to 28 cm (11 in) long, and a tail slightly shorter than that. It weighs between 140 ...
Fancy mice were popular pets in Japan during the 18th century, due in large part to the abundance of color mutations in wild mice. In 1787, a book on this hobby, The Breeding of Curious Varieties of the Mouse, was published by Chobei Zenya, a Kyoto money exchanger. Over time, the tradition spread from Japan to Europe, and in 1895 the National ...
The eastern woodrat is a rodent of medium size, with an average length of 21.2 centimetres (8.3 in) and weight of 245 grams (0.540 lb), [3] but grows up to 17 inches (43 cm) long. [5] The body is short and stocky and the tail is exceptionally long (15–20 centimetres (5.9–7.9 in)).
The black rat (Rattus rattus), also known as the roof rat, ship rat, or house rat, is a common long-tailed rodent of the stereotypical rat genus Rattus, in the subfamily Murinae. [1] It likely originated in the Indian subcontinent, but is now found worldwide. [2] The black rat is black to light brown in colour with a lighter underside.
The common degu is a small animal with a body length of 25.0 to 31.0 cm (9.8–12.2 in) and a weight of 170 to 400 g (6.0 to 14.1 oz). It has yellow-brown fur above and creamy-yellow below, with yellow around the eyes and a paler band around the neck.