Squirrels bury nuts in many places and forget some, which helps forests grow.

The longer version

Scatter hoarding spreads risk. Instead of defending one large store, a squirrel buries individual nuts across a wide area, so losing some to thieves or rot does not threaten the whole winter supply.

Recovery relies on spatial memory and smell, and success is never complete. The forgotten portion is exactly what makes the behaviour ecologically important, because a buried nut left in moist soil is already in a good position to germinate. Squirrels therefore act as unwitting planters, moving heavy seeds away from the parent tree where competition and predators are concentrated. Trees with large nuts appear to have evolved alongside this habit, producing crops in irregular cycles.

Where this entry sits

This collection gathers small surprises about mammals, reptiles, amphibians, birds, fish, insects, and the pets living alongside people. Expect odd details about senses, anatomy, and everyday behaviour that many people never notice in the animals around them. The full list sits on the Animals page, where every entry is listed in order.