A rat is a small omnivorous rodent of the genus Rattus. Rats are mammals somewhat bigger than their relatives the mice, but seldom weighing over 500 grams. The term rat is also used in the names of other small mammals which are not true rats. Examples include the wood or pack rat, a number of species loosely called kangaroo rats and the Bandicoot Rat, Bandicota bengalensis. In Western countries, many people keep domestic rats as pets. Descendants of Norwegian rats bred for research, these animals are often called "fancy rats", "coloured rats" or "colour rats." Domesticated rats tend to be both more docile than their wild ancestors and more disease prone, presumably due to inbreeding.






Page1



There are over 50 species of rats, the most well-known of which are the Brown Rat, Rattus norvegicus; the Black Rat, Rattus rattus; and the Polynesian Rat, Rattus exulans. These three common species often live with and near humans, share their food and spread disease. At least one of these three species occurs on over 80% of island groups around the world and they have caused about half of bird and reptile extinctions. The Black Plague is believed to have been spread by rat-borne parasites. Rats are also blamed for damaging food supplies and other goods. They have a very poor reputation; in the English language, "rat" is an insult and "to rat on someone" is to betray them by denouncing a crime or misdeed they committed to the authorities Rats might eat each other in stressful environments or when the number of rats in a space is very high, but cannibalism to prevent diseases from spreading is normal, where dead rats are eaten before they start spreading diseases.

Above Images Are From The USDA

















Aligator
Dinosaur
Frog
Komodo Dragon
Lizard
Sea Turtle
Snake
Toad
Tortoise
Turtle
MORE...


Carp
Catfish
Crab
Crayfish
Eel
Largemouth Bass
Lobster
Minnow
Pike
Octopus
Perch
Salmon
Sea Horse
Starfish
Stingray
Sunfish
Trout
Tuna
MORE...









All text contained in Animaltrek.com is licensed to the public under the GNU Free Documentation License (GFDL). All Information is courtesy of Wikipedia.
Copyrights | Privacy Policy | © 2005 FUN GROUP INC.