tailbutt

A tailbutt is a body type in which there is a completely smooth transition from belly, genital/anal area (if present) to tail, without joining at the glutes ("buttcheeks" not present). This could also be stated as a character having a tail instead of a butt.

The character must also have legs, giving the impression that the placement of the tail would have otherwise been a butt.

As body type it also usually implies a bulge between the legs connected to the belly, visualized in the official design of characters like Dragonite. The bulge will lead between the legs and smoothly connect to the tail behind. This may be the easiest way to identify a tailbutt without presenting_hindquarters.

This body type is especially popular with inflatables, Pokemon (Goodra, Dragonite, Charizard, Nidoqueen, Golduck etc), and Palworld monster characters (Dinossom, Quivern).

A character can have no anus or any genitalia at all while still presenting with the tailbutt body type.