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Cats, rats and other predators produce a chemical signal that terrifies mice, according to new research. Scientists in the US discovered that when mice detect specific proteins found in cat saliva and rat urine they react with fear. These proteins, called Mups, act on cells in a special sensory organ in the mouse, called the vomeronasal organ.
2010-05-17
smell pheromone cat mouse rat saliva protein detection fear predatorThe local farmers call it a flood; an inundation that happens every 50 years. Others believe it to be an act of God, an inevitability. It isn't water flooding the precious farmland in north-eastern India, but rats. A once in a generation, gigantic plague of rats, that ruins crops and leaves people starving. A rat army so big, so mythical, that until now some scientists did not believe it was real.
2010-11-19
rat India flood overpopulation Burma Myanmar plague pest