sucking

Remilia and Flandre types used to suck paste out of prey yukkuri, eating and killing them without damaging their skin, a reference to the real Remilia and Flandre being vampires.
Nowdays though most artist opt to just make them outright chew through a yukkuri, skin and all.

Tag can also refer to koyukkuri with a behavior to suck whatever they could put in their mouth including their own braid, similar to real babies. Some artist even show mother Reimus being able to let koyukkuri suck their mother's paste, similar to a human mother breastfeeding.