Werewolves of Landon

I remember this show.  Michael Landon played the youngest of three brothers.  His mom had died a long time ago, but his "Paw" was still kicking.  In fact, his paw was a very rich cattleman who owned a ranch called The Ponderosa.  They would be considered greedy one per-centers by today's standards, but it was admirable to have wealth in those days. 

Anyway, there would be nights were they would all turn into werewolves and go devour cattle.  The next day they would wake up to discover that some of their cattle had been killed by wolves.  They'd all ride out looking for the animal that did this to their livestock but could never find and kill it.

Every show was basically the same.  There would be romantic interests along the way, but somehow their girlfriends would mysteriously get killed by that rascally wild wolf that they never could seem to find. Little Joe would often ride into town and hook up with his teen friends and sing-sing-SING!