These sacs are found in many carnivorans, including wolves, bears, sea otters and kinkajous. It is in the family Procyonidae, which also includes raccoons, olingos, and kinkajous. The similarities between kinkajous and olingos are thus an example of parallel evolution. It comprises the raccoons, coatis, kinkajous, olingos, olinguitos, ringtails, and cacomistles. Olingos are quite rare in zoos and are often misidentified as kinkajous. The larger kinkajous are dominant and will drive olingos away when food is scarce. Other mammalian prey may include numerous arboreal rodents as well as opossums and kinkajous. However, olingos may have greater agility, perhaps facilitating their sympatry with kinkajous. Kinkajous are sometimes kept as exotic pets. Other pollinators include opossums, kinkajous, porcupines, ring-tailed coati, certain primates, and occasionally bees. Olingos and kinkajous are now known to be members of the raccoon family. Kinkajous sleep in family units and groom one another. Kinkajous dislike sudden movements, noise, and being awake during the day. Kinkajous have a much more extensive range than olingos and tend to be more common. Kinkajous spend most of their life in trees, to which they are particularly well adapted.