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The rainbow trout is native only to the rivers and lakes of North America, west of the Rocky Mountains, but its value as a hard-fighting game fish and tasty meal has led to its introduction throughout the world.
Rainbow trout, also called redband trout, are gorgeous fish, with coloring and patterns that vary widely depending on habitat, age, and spawning condition. They are torpedo-shaped and generally blue-green or yellow-green in color with a pink streak along their sides, white underbelly, and small black spots on their back and fins.
They are members of the salmon family and, like their salmon cousins, can grow quite large. They average about 20 to 30 inches (51 to 76 centimeters) long and around 8 pounds (3.6 kilograms), but can grow as long as 4 feet (1.2 meters) and weigh up to 53 pounds (24 kg).
They prefer cool, clear rivers, streams, and lakes, though some will leave their freshwater homes and follow a river out to the sea. These migratory adults, called steelheads because they acquire more silvery markings, will spend several years in the ocean, but must return to the stream of their birth to spawn.
Rainbow trout survive on insects, crustaceans, and small fish. Their populations are healthy worldwide and they have no special status or protections. However, they are now considered a non-native pest species in some areas where they have been introduced.

Friday, 16 September 2011

Rain Forest Facts: The Serval hunts primarily as a crepuscular animal moving quietly through the grass on its long legs, listening for its prey. The large ears aid in giving the Serval acute hearing by which to detect prey in the dark. The Serval has 22 muscles in it’s ears alone! When prey is located, the Serval pounces on it killing it with a quick, hard blow. It is also very skilled at digging rodents out of their burrow using its front paws. Serval are very secretive, solitary animals, rarely seen during the day.
An environmentally important animal, the Serval may kill as many as 3,000 rats per year. This massive reduction in the local rodent population has very far reaching implications for the native people of the area. Food grown for human consumption as well as domestic animal feed is far less likely to be destroyed in the field by rodents when Servals live in the area.

In the late 1980s, an epidemic of attacks by Pit Bull type dogs, and other related breeds, led to widespread bans. In 1991, the Parliament of the United Kingdom banned the ownership of Japanese Tosa Inus, Argentine Dogos, Fila Brasilieros and Pit Bulls, with many other countries following suit soon after. Even in areas where having such dogs is legal, it can be nearly impossible for homeowners to get liability insurance if they own one of the breeds below.