nonprehensile

Nonprehensile describes a body part, typically a tail or limb, that cannot grasp or hold objects.

While some monkeys have prehensile tails capable of gripping branches, most mammals have nonprehensile tails that serve only for balance or communication.

The term applies broadly in zoology to distinguish animals that lack this grasping ability from those that possess it.

The dog's nonprehensile tail wagged but couldn't wrap around anything.