Lemmings do not mass-march off cliffs — this myth was staged in a Disney documentary using a turntable.

Some species of turtles can breathe through their cloaca underwater.

Fact #365 · Animals

Certain birds build nests on cliffs for protection.

Fact #531 · Animals

Certain frogs are poisonous to predators.

Fact #418 · Animals

A blue whale's heart can weigh over 400 pounds.

Fact #104 · Animals

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

Fact #251 · Animals

Certain species of fish build bubble nests.

Fact #511 · Animals

Certain frogs can inflate themselves to appear larger to predators.

Fact #377 · Animals

Octopuses can solve simple puzzles and open jars.

Fact #31 · Animals