Animal tool use refers to the ability of non-human animals to manipulate objects in their environment to achieve specific goals. This behavior has been observed in various species, including chimpanzees, crows, and octopuses. These animals use tools for tasks such as foraging for food, building shelters, or defending themselves. Research shows that tool use is not limited to primates; many birds and marine animals also demonstrate this skill. For example, sea otters use rocks to crack open shellfish, while New Caledonian crows create tools from twigs to extract insects from tree bark. This behavior highlights the cognitive abilities of these animals.