Definition of Animal Euthanasia Animal euthanasia is the act of killing an animal humanely, most commonly with injectable drugs. ( https://en.wikipedia.org/wiki/Animal_euthanasia ) It's  a method of killing that minimises pain, distress, and anxiety experienced by the animal before the loss of consciousness. ( https://www.msdvetmanual.com/clinical-pathology-and-procedures/euthanasia/euthanasia-of-animals ) How Does Animal Euthanasia Work? Animal euthanasia is typically a two-step process involving two injections to make it painless and stress-free for the animal that is being euthanised. ( https://www.petmd.com/dog/care/euthanizing-pets-home-cost-what-expect )  According to https://petlossathome.com , animal euthanasia involves injecting a massive overdose of anaesthesia. A calming sedative is given followed by a vein injection. As the anaesthesia takes effect, it overwhelms the brain and shuts it down, quickening breathing and breathing stops within 30 seconds. T...