Red-eyed tree frog (red-eyed leaf frog) (Agalychnis callidryas) on a branch, Costa Rica

King penguins (Aptenodytes patagonicus) at breeding and nesting colony at Salisbury Plain in the Bay of Isles, South Georgia, Polar Regions

Crayfish in grassland near Beaumont, Texas, United States of America

Closeup of red eyed tree frog