Yes, you have three options. General anaesthetic, conscious sedation or no-sedation at all. I'd recommend General Anaesthetic.
Tail docking is performed without anaesthetic or any other kind of pain relief as it is performed on a very young but conscious puppy. For ear cropping dogs are put under general anaesthetic so they cannot feel it.
general or local
General anaesthetic.
Your question doesn't make sense, what do you mean by endoscopy performed in US? Are you wondering about how the procedure is performed? How much volume does the US carry in Endoscopies? How much one costs? I could go on forever you see?
u need a general anaesthetic
Yes, the surgeon can use a spinal block.
Yes
Dead skin is cleaned by debridement, which is cutting and removing the dead skin. This can be done without anaesthetic, but larger areas may require a general anaesthetic
If flexible cysturethroscopy is done usually under a local anaesthetic, recovery will take about 15-30 minutes, and if done under a general anaesthetic a few hours.
The procedure is performed at a hospital or surgical clinic by a surgeon or gastroenterologist trained in endoscopy and placement of these tubes.
Singular from is endoscopy. The plural form is endoscopies.
A surgical endoscopy always includes a diagnostic endoscopy.