Sea otters hold hands while they sleep
They float on their backs in groups called rafts and hold paws so they do not drift apart on the current. They also wrap themselves in kelp as an anchor.
More animals facts
See all →A snail can sleep for up to three years
When the weather turns too dry or too cold, some land snails seal their shell with a layer of mucus and go dormant until conditions improve — sometimes for years.
Read the fact →Elephants are the only mammals that cannot jump
With four to six tonnes to carry, an elephant always keeps at least one foot on the ground. Even at full speed its gait is a fast walk, not a run.
Read the fact →Cows have best friends
Studies of dairy herds show cows form close bonds with particular partners and show measurable stress — higher heart rate and cortisol — when separated from them.
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