Goldfish do not have a 3-second memory — they can remember things for months and can be trained.

Some amphibians undergo dramatic transformations during metamorphosis.

Fact #493 · Animals

Some species of crabs can regenerate lost claws.

Fact #396 · Animals

Some species of penguins can swim at speeds of up to 15 miles per hour.

Fact #251 · Animals

Sea otters hold hands while sleeping to avoid drifting apart.

Fact #364 · Animals

Some birds can sleep while flying.

Fact #332 · Animals

A sea sponge is an animal, not a plant.

Fact #541 · Animals

Some birds migrate between hemispheres each year.

Fact #203 · Animals

Some lizards can detach their tails to escape predators.

Fact #509 · Animals