Mouse
Small, clever, and responsible for most of modern medicine
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Overview
The house mouse might be humanity's most complicated relationship in the animal kingdom. We've feared them, exterminated them, and simultaneously bred them by the millions — because their biology is so similar to ours that they've become indispensable to medical research.
Friendly fact
Male mice serenade females with ultrasonic songs — complex, patterned compositions that, when slowed down to human hearing range, bear a striking resemblance to birdsong.
Fascinating facts
- 1
Mice are central to virtually all modern medical research — the vast majority of drug trials begin with mice, and their genome is 85% identical to humans.
- 2
Mice sing to each other. Males produce complex ultrasonic songs to attract females, similar in structure to birdsong.
- 3
A mouse's whiskers are among the most sensitive touch receptors in the mammal world — they can detect changes in air current and surface texture with extraordinary precision.
- 4
Mice have excellent memories and can remember the layout of a maze even months after learning it.
- 5
Wild mice are important seed dispersers and prey animals for nearly every medium-sized predator in the ecosystems they inhabit.
Myth vs. Reality
Myth
Mice love cheese.
Reality
Mice actually prefer sweet and starchy foods. The cheese association likely comes from the fact that in older pantries, cheese was the most available uncovered food. Peanut butter is a far better trap bait.
Myth
If you see one mouse, there are dozens more.
Reality
This is sometimes true but often overstated. A lone mouse entering a home for warmth is common. Infestation requires food, water, and nesting opportunity — addressing these factors is more effective than panic.
Myth
Mice are aggressive.
Reality
Mice are prey animals and are terrified of humans. Their small, quick movements that startle people are them fleeing in terror, not advancing.