The bearded vulture, or lammergeier, is the king of all vultures when it comes to the strength of its stomach acid - it is the only known vertebrate whose diet consists almost exclusively (up to 90%) of bone, and it can fully digest even large pieces of bone in around 24 hours.



It's also an exceptionally beautiful bird.

Phyllodesmium iriomotense is a species of sea slug.

Caribou on the Arctic tundra in autumn at Denali National Park in Alaska.

Two male frogs vie for a branch. Photographed in the Atlantic Forest, Michelin Reserve, Igrapiúna, Bahia, Brazil.