There are two major ways to anesthesize animals for surgery.

In the cat world this is a controversy. The cat specialists mostly all use inhaled gas (I don't know the name), which wears off very quickly with no side effects. The animal can go home same day as a rule with no complications.

The other way is injectable drugs which linger and cause alot of groggy behavior. The Vets using this type typically keep the animal overnight, so they won't hurt themselves. My late cat Tippy had tooth work done, with this type several years ago and was released same day... she tried to jump thru the glass of a closed window at home she was so confused.

The cat only place I am going to now, only uses the gas. They claim it is safer all around for animals. I chose to go there this time because Weez can come home and not have to stay overnight, which would be a bigger stressor for her than the surgery itself, IMO. She is very timid and afraid of everything.

If you watch science programs on TV that have vets, you can most often see them using gas.