We have a stray that we are 'fostering' until we can find him a good home. Our chickens normally freerange, but we are unable to let them out while this dog is out of his kennel. And now, he has taken to running toward the fenced pen, scaring the chickens, and trying to tunnel under the fence. I think it is reducing our egg production. Anyone have any anectdotal experience with this kind of situation?