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Habitat and range Outdoor entrance to a rabbit burrow Rabbit habitats include meadows, woods, forests, grasslands, deserts and wetlands.[1] Rabbits live in groups, and the best known species, the European rabbit, lives in underground burrows, or rabbit holes. A group of burrows is called a warren.[1] More than half the world's rabbit population resides in North America.[1] They are also native to southwestern Europe, Southeast Asia, Sumatra, some islands of Japan, and in parts of Africa and South America. They are not naturally found in most of Eurasia, where a number of species of hares are present. The European rabbit has been introduced to many places around the world.[2] Biology A skin-skeletal preparation showing its incisors Evolution Because the rabbit's epiglottis is engaged over the soft palate except when swallowing, the rabbit is an obligate nasal breather. Morphology Video of a European rabbit, showing ears twitching and a jump Ecology Rabbits are hindgut digesters. Sleep Lifespan

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Leporidae The term "leporid" may be used as a noun, meaning "a member of the family Leporidae" or as an adjective meaning "like members of the Leporidae". The common name "rabbit" usually applies to all genera in the family except Lepus, while members of Lepus (almost half the species) usually are called hares. Like most common names however, the distinction does not match current taxonomy completely; jackrabbits are members of Lepus, and members of the genera Pronolagus and Caprolagus sometimes are called hares. Various countries across all continents except Antarctica and Australia have indigenous species of Leporidae. Otter Etymology[edit] The word otter derives from the Old English word otor or oter. This, and cognate words in other Indo-European languages, ultimately stem from the Proto-Indo-European language root *wódr̥, which also gave rise to the English word "water".[1][2]

Mustelidae Variety[edit] Mustelids vary greatly in size and behaviour. The least weasel is not much larger than a mouse, while the giant otter can measure up to 2.4 m (7.9 ft)[citation needed] in length and sea otters can exceed 45 kg (99 lb) in weight. The wolverine can crush bones as thick as the femur of a moose to get at the marrow, and has been seen attempting to drive bears away from their kills. The sea otter uses rocks to break open shellfish to eat. Mudskipper Adaptations Compared with fully aquatic gobies, these fish present a range of peculiar behavioural and physiological adaptations to an amphibious lifestyle. These include: Anatomical and behavioural adaptations that allow them to move effectively on land as well as in the water.[3] As their name implies, these fish use their fins to move around in a series of skips.

Odobenidae Odobenidae is a family of Pinnipeds. The only living species is walrus. In the past, however, the group was much more diverse, and includes more than ten fossil genera. Taxonomy[edit] Hummingbird Hummingbirds are New World birds that constitute the family Trochilidae. They are among the smallest of birds, most species measuring in the 7.5–13 cm (3–5 in) range. Indeed, the smallest extant bird species is a hummingbird, the 5-cm Bee Hummingbird. They are known as hummingbirds because of the humming sound created by their beating wings which flap at high frequencies audible to humans. They hover in mid-air at rapid wing flapping rates, typically around 50 times per second,[1] but possibly as high as 200 times per second, allowing them also to fly at speeds exceeding 15 m/s (54 km/h; 34 mph),[2] backwards or upside down.[3][4] Hummingbirds have the highest metabolism of any homeothermic animal.[5] To conserve energy when food is scarce, they have the ability to go into a hibernation-like state (torpor) where their metabolic rate is slowed to 1/15th of its normal rate.[6] The smallest species of hummingbird weighs less than a penny.

Mongoose Name[edit] The word "mongoose" is derived from the Marathi name mungus (मुंगूस) (pronounced as [muŋɡuːs]), perhaps ultimately from Dravidian (cf. Telugu mungeesa (ముంగిస), Kannada mungisi (ಮುಂಗಿಸಿ)). The form of the English name (since 1698) was altered to its "-goose" ending by folk-etymology.[3] It has no etymological connection with the word goose. The plural form is mongooses,[4] or, rarely, mongeese.[5] It has also been spelled "mungoose".[6] Description[edit] Balaenidae Characteristics[edit] Balaenids are large whales, with an average adult length of 15 to 17 metres (45–50 feet), and weighing 50-80 tonnes. Their principle distinguishing feature is their narrow, arched, upper jaw, which gives the animals a deeply curved jawline.

Phalangiidae The Phalangiidae are a family of harvestmen with about 380 known species. The best known is Phalangium opilio. Dicranopalpus ramosus is an invasive species in Europe. It is not to be confused with the harvestman family Phalangodidae, which belongs to the suborder Laniatores. Name[edit] Trichechidae Definition from Wiktionary, the free dictionary Translingual[edit] Trichechus manatus one of three species of Trichechidae Etymology[edit] Trichechus +‎ -idae Proper noun[edit] Felinae Genera[edit] References[edit] External links[edit] Felidae Extant felids belong to one of two subfamilies: Pantherinae (which includes the tiger, the lion, the jaguar, and the leopard), and Felinae (which includes the cougar, the cheetah, the lynxes, the ocelot, and the domestic cat). The first felids emerged during the Oligocene, about 25 million years ago. In prehistoric times, a third subfamily, the Machairodontinae, included the "saber-toothed cats", such as the well-known Smilodon. Other superficially cat-like mammals, such as the marsupial sabertooth Thylacosmilus or the Nimravidae are not included in Felidae despite superficial similarities. Evolution[edit] The 41 known cat species in the world today all descended from the same ancestor.[1] Cats originated in Asia and spread across continents by crossing land bridges.

New World porcupine Characteristics[edit] New World porcupines are stout animals, with blunt, rounded heads, fleshy, mobile snouts, and coats of thick, cylindrical or flattened spines ("quills"). The spines are mixed with long, soft hairs. Porcupine The common porcupine is a herbivore. It eats leaves, herbs, twigs and green plants like clover and in the winter it may eat bark. The North American porcupine often climbs trees to find food. The African porcupine is not a climber and forages on the ground.[1] It is mostly nocturnal,[2] but will sometimes forage for food in the day. Porcupines have become a pest in Kenya and are eaten as a delicacy.[3] A male porcupine urinates on a female porcupine prior to mating, spraying the urine at high velocity.[4][5][6][7][8] The name porcupine comes from Middle French porc espin (spined pig).[9] A regional American name for the animal is quill pig.[10]