This is a cam-actuated camel toy designed by John Hutchison. The plans for the toy were part of an article in the Woodworker's Journal
December, 2000. This particular one was built by a gentleman named Mike for his grandson. A cam is attached to the back wheel axle which drives a dowel that in turn causes the humps, head, tail and legs to move up and down when the toy is pushed.
Here is a page with the builder's notes and several pictures of the wooden camel cam-driven toy
[ Thanks Charles! ]
Labels: animals, cams, mechancial toys, wood, woodworking