[My baby*Fergie*]

Hello everyone, there is a question i have about when I take Fergie to go get fixed. I have heard horror stories about how the doctors put the dogs under....like with tubes down their throat, and how that could cause them tracheal damage. Also I heard stories about how they pick the wrong medicine to put them under, then the dogs dont wake up. I dont know exactly what I am suppose to tell or ask the doctor. I dont want anything to happen and I want to be able to get the doctor to understand im serious about this. I sometimes think they dont take me seriously. Does anyone have any advice!Thankyou