On the old system I figured out how to post videos…sorry I lost my skills.
Here is a detail of the mechanism to move Moose’s legs
The steel wires are bent so that they snap over the cranks. they can be snapped off too so that moose can be removed from the tread mill
Here are the links that operate the legs the rear legs are controlled directly from the crank, the front legs are controlled by links from the rear. note that the links cross