Anal penetration refers to "penetrating contact... right inside the anal opening, no deeper than a fingertip/knuckle" 35 percent, or more than one in three, of respondents reported enjoying it.

Touching the anus or inside it at the same time as penetrating the vagina or touching the clitoris also received a healthy approval from 40 percent of the women. "Little is known about the ways in which women actively choose different non-penetration techniques or how pleasure levels may vary between these techniques"