The mating grip is where, during mounting, the character penetrating wraps their paws/hands around the penetrated character's rear legs, pulling them into their thighs. The penetrating character's hands/paws should be purposefully providing a point of leverage for penetration, and should allow the penetrating character to prevent the penetrated character from escaping easily.
See also:
- one-handed_mating_grip - When the top has one paw/hand in this position and the other in another position, such as on the ground.