Chimpanzees are true masters when it comes to solving puzzles and using tools. They build spoon-like rods to scoop out honey or crack open nuts using stones. To prevent hurting their fingers, they knuckle-walk. In doing so, they place only the middle phalanxes of their hands on the ground.\n\n\n\n\n\nDimensions: 3.03 x 1.63 x 2.40 inches