The medication we give first will create wonderful, peaceful sleep that eliminates all anxiety, pain, and sensation. The first medication is given like a vaccine, under the skin. Most pets do not worry about it, and a few do complain a bit when it is administered. In some cases, we have seen pets cry out and attempt to bolt during this injection. In any case, your pet will "forget" about it immediately and start to feel deeply relaxed. The initial sedative is given to ensure that your pet will not feel the euthanasia injection at all and that process will be painless and peaceful.