American alligator (Alligator mississippiensis) stick balancing

Myrmicine ant (Aphaenogaster sp.) liquid carrying

Central chimpanzee (Pan troglodytes troglodytes) termite fishing

Homo erectus (Pithecanthropus erectus) shell engraving

A RARE example

Veined octopus (Amphioctopus marginatus) shell carrying

Defining tool use

Green heron (Butorides striata) bait fishing