Yeti (The Five Doctors)

This Yeti was time scooped to the Death Zone on Gallifrey. It was encountered in a cave by the Second Doctor and the Brigadier, who were no strangers to the Yetis. The Doctor maddened it with fireworks and the resulting rock fall prevented any further interaction with it. This Yeti was acted wild, which is strange for a robot. (TV: The Five Doctors)