We have 2 chihuahuas-one weighs a hefty 8+ lbs and the other is a 3-legged-3-lbr! Both of them were excited when the chicks arrived. After about 3 days of constant watching and telling the dogs to quit chasing the chicks, they laid off-or so I though. Within the next 2 days, 2 chicks lost their lives to my over-excited and extremely 'playful' pups. I didn't punish them, because they are taught to keep trespassers out of the yard, these chicks, in their minds, are no different. I must admit though, we have a duck and she pecked the dog in the face-that could be why she is leaving the group alone. We have had them for about a month now, and no more tragedies have struck. Like the previous post said, chicks get killed-you have to move on. I don't think shaming your dog is really going to fix the problem, I think lot's of time and energy training the dog that the chickens aren't to be touched is the answer. My dogs love sucking on their stuffed animals, so I took their toys and put them over with the chicks. That drove them nuts and finally they realized that when they misbehave, someone else gets their toys. They are now protecting the brood instead of attacking them.