Euthanasia list at the Humane Society for story on pet euthanasia.Cat in its cage at the Humane Society for story on pet euthanasia.Trent feet and Dogs in their cages at the Humane Society for story on pet euthenasia.Trent feet and dog in cage at Human SocietyDogs in their cages at the Humane Society for story on pet euthanasia.