I feel bad for the pigeons. Their whole species is an example of human neglect. If you really think about it, the animal ears' existence is also incredibly unethical. Imagine being forever trapped in a child's body & living as an assistance dog for some closeted pedophile? Even if they never mature, they probably start looking like those progeria kids in Akira eventually. Putting down a dog is hard enough, who wants to see a little girl with osteoporosis and a broken hip?