Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Cows can sleep standing up, but they can only dream lying down.
745
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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