The
tail is the section at the rear end of an
animal's body; in general, the term refers to a distinct, flexible
appendage to the
torso. It is the part of the body that corresponds roughly to the
sacrum and
coccyx in
mammals,
reptiles, and
birds. While tails are primarily a feature of
vertebrates, some
invertebrates including
scorpions and
springtails, as well as
snails and
slugs, have tail-like appendages that are sometimes referred to as tails. Tailed objects are sometimes referred to as "caudate" and the part of the body associated with or proximal to the tail are given the adjective "caudal".