The Meerkat has dark circles around his eyes which work the same way sunglasses do.
An otter can close his eyes and ears as he swims through the water.
The green anole’s can regenerate, or regrow, his tail if a predator tries to snatch him up. Losing the tail helps him escape and survive.
The arctic tern migrates 25,000 miles every winter! That’s a long way! Migrating that far allows them to reach an environment where they will be in a favorable climate with food sources.