2011年4月21日星期四

Primarily nocturnal, rats and mice build nests of sticks and leaves

Primarily nocturnal, rats and mice build nests of sticks and leaves or nest in burrows. They live in polygynous groups of multiple males and females, the females breeding throughout the year. A mature female can produce up to five litters a year of 6 to 12 pups. Young rodents MBT BoostMBT Sport, reach maturity quickly and are capable of reproducing by 3 to 5 months of age. In the wild rodents generally live 6 months to a year but have been known to live up to four years in captivity.?

Aggressive in defending their territory, rodents exhibit many destructive behaviors that create problems for home and property owners. They contaminate food sources with their urine and feces, gnaw through baseboards and walls, destroy farm and garden crops and fruit trees, and spread MBT Shoes Clearance,internal parasites and mites that can infect pets and humans. Rat fleas carry a number of diseases than pose a serious danger to humans, pets and livestock.

In the Middle Ages, the Black Plague (also called the Black Death), carried and spread by the rat flea, decimated human populations worldwide killing more than 20 million. Bubonic plague spread by rats killed tens of millions during the 19th century Asian pandemic. Each year approximately 3,000 cases of bubonic plague are reported worldwide in Asia, Africa, the U.S. and South America. Scientists fear that global warming may increase the incidence of plaque which favors warmer climates. In 2006, campgrounds were closed for three MBT Shuguli GTX weeks in NaturalBridgesNational Monument in Utah when bubonic plague was detected in field mice and chipmunks. Rats and mice can also spread disease through parasites and feces. In the early 1990s, a deadly outbreak of Hantavirus Pulmonary Syndrome in New Mexico was linked to breathing the dust of mouse feces. Characterized by hemorrhagic fever and renal failure, a disturbing number of cases of the untreatable hantavirus have been reported each year in the U.S.

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