👉 Tarsiers are small, arboreal marsupials. They have a unique adaptation that allows them to survive in an arid environment by growing their fat reserves over time. This adaptation is called the "tarsier nut" or "tarsier seed," which resembles a nut and contains a high concentration of fat. Tarsiers are also known for their ability to use their tails as tools, such as reaching out with them to grab small objects or retrieve food from trees.