Glossary

Anesthesia

A medically induced, controlled loss of consciousness for surgery, dental cleaning or imaging, with monitoring throughout.

Also called: anesthesia, general anesthesia, sedation, going under, anesthetic risk

General anesthesia puts a dog into a controlled, reversible state of unconsciousness so a procedure such as a spay, a tooth cleaning or a mass removal is painless and the dog stays still. Sedation is a lighter state used for tasks like X-rays. A veterinary team usually checks the exam and bloodwork first, places an intravenous line, protects the airway with a breathing tube and monitors the heart, oxygen, temperature and blood pressure throughout.

For healthy dogs, the risk is low, but it is never zero. Older dogs, dogs with heart, kidney or liver disease, and flat-faced breeds with narrow airways carry more risk, which is why pre-anesthetic checks matter.

Follow the fasting instructions the clinic gives you, ask who monitors your dog and how pain is managed, and expect the dog to be sleepy for the rest of the day.

Last reviewed November 8, 2026

In the index now

Related terms

Dental disease Plaque, tartar and gum infection that damage a dog's teeth and supporting bone; it is the most common health problem vets find in adult dogs. Spay Surgery that removes a female dog's ovaries, and usually the uterus, to prevent pregnancy and heat cycles and eliminate the risk of pyometra. Blood panel A set of blood tests that counts blood cells and measures organ-related chemicals, used to screen healthy dogs and investigate illness. Brachycephalic obstructive airway syndrome A set of airway abnormalities in flat-faced breeds that make breathing hard, causing noisy breathing, poor heat tolerance and collapse.