I think that when someone casts a patronus it is supposed to be an animal that someone associates with comfort. I've never known if someone could have something other than an animal for a patronus. Ofc (as Ariebelles pointed out to me as we are discussing patronuses now) Severus Snape changed his Patronus to Lily Potters, so in theory there is some measure of control we all would have over our patronuses.
So were you able to choose your patronus, what animal would you choose, thinking in terms of something that has meaning to you and gives you comfort?
Mine would be a cow. I'v