cleft anus

deformation of the sphincter muscle of the anus and is a normal condition, but the anus is elongated vertically to an unusual degree. The key feature is the vertical opening rather than the overall shape, suggesting that the anus in images using this tag has been used roughly. In most cases, it is depicted with fine wrinkles, similar to puckered_anus.

However, while it resembles puckered anus, the intended form is clearly different.
do not use this tag if the distinction is unclear.

Examples

Incorrect Examples

The hole is wide and there are many wrinkles, but the hole is not vertical. just use puckered anus

The hole is artificially widened and spread horizontally, which is not the typical shape of a hole.