The anus piercing belongs to the genital piercings, which can be carried by male and female, apart from the guiche piercing.
The canaliculus of the anus piercing runs vertical between the inside of the anal sphincter an the perineum. Probably its´ a matter of a rather rare piercing because surely it isn´t to carry very comfortably, particularly in the early days (interference by sitting etc.) and also admits a inconvenient hygiene.
The healing can takes 3 to 6 months and for jewellery mostly a BCR or a piercing barbell is applied.
You should waive on sexual activities during the healing time.