He was so terrified of humans that you could hear the whimper behind that big growl of his. Here's a perfect example of why adopting dogs from shelters and rescue groups can be life-changing for both the dog and for you. Buying a dog from a pet store only increases the demand for cruel puppy mills. And for every dog at a breeder, there's one like this guy waiting at a shelter. Finn has his happy ending, and other dogs are wishing for theirs.