General: vaginal fingering
A character inserting fingers into the pussy (but not all of them, because that would be vaginal_fisting).
For tagging purpose, this tag applies to both anthro and feral alike. Regardless if they have humanoid hands, paws, hooves, etc.
If the character is fingering the pussy of another character, also add fingering_partner. If the character is fingering their own pussy, add fingering_self and vaginal_masturbation.
See also:
The following tags are aliased to this tag: pussy_fingering, fingering_pussy