I can't answer your concerns regarding anesthesia on your dog any better than has already been said. But!! If you have concerns, a truly compassionate vet will absolutely, positively, NOT (say it louder for those in the back) NOT!!! dismiss your concerns or brush your fears aside. They will listen, discuss & weigh out the pros/cons with you before the procedure. If you feel 'silly' discussing very important decisions with your vet.... IMO, you need to find a different vet that will help you understand things & put your fears to rest (or, reconsider what the treatment plan for your dog is going to entail)
PS - Allowing your dog to be put under anesthesia is always something that causes us to thing very carefully & weigh out the various options. Is it scary? Yeah, it definitely is, but... if you trust your vet & have had an in-depth conversation about this, it's way less so.
PS - Allowing your dog to be put under anesthesia is always something that causes us to thing very carefully & weigh out the various options. Is it scary? Yeah, it definitely is, but... if you trust your vet & have had an in-depth conversation about this, it's way less so.