We’ve seen machines that automatically launch a ball for a dog to fetch, but this one is completely mechanical -no power needed- and controlled by the dog!
This does not mean the poor dog never plays fetch with his human. It just means the dog can play even when his human is not available. He gets to chase a ball any time he wants! -via Viral Viral Videos
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Really clever! Look at all the exercise that little dog is getting. And he seems to be having a great time.
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