to Pet Health Network or

Answers from vets about your dog:

How Do I Prepare for My Dog or Cat Having Surgery?

Posted May 14, 2014 in Dog Surgery A-Z

Dr. Phil Zeltzman is a traveling, board-certified surgeon in Allentown, PA. His website is He is the co-author of “Walk a Hound, Lose a Pound” (

Kelly Serfas, a Certified Veterinary Technician in Bethlehem, PA, contributed to this article.

If your dog or cat is scheduled for surgery, your veterinarian will likely ask you to take a few steps to prepare. Following these steps will help everything run smoothly on the day of the procedure.

Fasting before anesthesia
Any time your pet is scheduled for anesthesia, fasting will be required. Why is that?   

Tranquilizers and anesthesia drugs decrease the swallowing reflex. If your groggy pet vomits from the drugs, there is risk of aspirating, or inhaling, the vomit into the lungs. This can cause a type of pneumonia called aspiration pneumonia, which can be fatal.

Different veterinarians will have different time requirements for withholding food. Sure, your dog or cat may complain about it, but please don’t give in! It truly is for your pet’s own safety.

There are a few exceptions to the fasting rule:

  • Puppies and kittens have little energy in reserve, so your veterinarian will likely instruct you to give them a small meal in the morning.
  • Pets with diabetes may also need a small meal in the morning, along with insulin, so please discuss this with your family vet.

Most vets will allow your pet to drink water overnight, until you leave home, to prevent dehydration.

Preparing for surgery
Before the procedure, ask your veterinarian if you can give medications in the morning — some may be needed, but some can be skipped. Also ask if you should drop off your pet’s medications or food the day of surgery. It’s always betterDog preparing for surgeryfor your pet to eat his normal food, whether it’s generic food or a special diet.

You may have been told how much confinement your pet will need after surgery, and what that entails; please make sure you have a room, a play pen or a crate prepared for the day your pet comes home.

The morning of surgery
You will need to drop your pet off early in the morning, even though surgery may not occur until late morning or the afternoon. Why is that?  There are multiple reasons, depending on your pet’s specific situation. Your veterinarian may wish to:

  • Run a physical exam
  • Run blood work
  • Place

Share This Article

Dr. Phil Zeltzman is a board-certified veterinary surgeon and author. His traveling practice takes him all over Eastern Pennsylvania and Western New Jersey. You can visit his website at, and follow him at