On a longline fishing boat off the Galapagos Islands, a concerned biologist working undercover as a cook films a horrifying scene. As the camera rolls, a blue shark is dragged upside down out of the water, a sharp hook piercing it through the roof of the mouth and out through the side of the face...

Contents What is meant by "chaining" or "tethering" dogs? Why do people tether their dogs? Why is tethering bad for dogs? How does tethering dogs pose a danger to humans? How should dogs be confined and restrained safely? Should tethering ever be allowed? What about attaching a dog's leash to a...