Why mice fear the smell of cats

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 predator

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