1. The wolf is a canid native to the wilderness and remote areas of North America, Eurasia, and North Africa. It is the largest member of its family, with males averaging 43–45 kg, and females 36–38.5 kg. It is a social animal, travelling in nuclear families consisting of a mated pair, accompanied by the pair's adult offspring. The gray wolf is one of the world's most well known and well researched animals, with probably more books written about it than any other wildlife species. Hunting and trapping has reduced the species' range to about one third of its original range, though it's still relatively widespread with stable populations.
2. The cat is a small, usually furry, domesticated, and carnivorousmammal. Cats are often valued by humans for companionship and their ability to hunt vermin and household pests. Cats are similar in anatomy to the other felids, with strong, flexible bodies, quick reflexes, sharp retractable claws, and teeth adapted to killing small prey. Cats can hear sounds too faint or too high in frequency for human ears, such as those made by mice and other small animals. They can see in near darkness. Like most other mammals, cats have poorer color vision and a better sense of smell than humans.
3. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses. Horses have an advanced sense of taste, which allows them to sort through fodder and choose what they would most like to eat, and their prehensile lips can easily sort even small grains. Horses generally will not eat poisonous plants, however, there are exceptions; horses will occasionally eat toxic amounts of poisonous plants even when there is adequate healthy food.
4. Rabbits are small mammals found in several parts of the world. There are eight different genera in the family classified as rabbits, including the European rabbit (Oryctolagus cuniculus),cottontail rabbits (genus Sylvilagus; 13 species), and the Amami rabbit (Pentalagus furnessi, an endangered species onAmami Ōshima, Japan). The male is called a buck and the female is a doe; a young rabbit is a kitten or kit.
5. A mouse is a small mammal belonging to the order of rodents, characteristically having a pointed snout, small rounded ears, and a long naked or almost hairless tail. The best known mouse species is the common house mouse (Mus musculus). It is also a popular pet. In some places, certain kinds of field mice are also common. They are known to invade homes for food and occasionally shelter.