A tree pig isn't actually a pig. We're not sure what it is. The reason for it's naming is because it oinks. This strange animal shoots webs during the fall so it can store fruit in them for winter. Tree pigs live in burrows left over from other creatures. Only male tree pigs have stalks on their heads that release pollen to fertilize flowers on a female during mating season. Females then grow special fruits that hatch into baby tree pigs.