Tool use in animals is fairly common. Generally we haven't seen it in the past because we simply weren't looking. https://www.sciencedirect.com/science/articl

Tool use in animals is fairly common. Generally we haven't seen it in the past because we simply weren't looking. https://www.sciencedirect.com/science/article/abs/pii/S1616504719300333 https://www.sciencedirect.com/science/article/abs/pii/S16165...