What to expect before and after your pet's surgery

If your vet has recommended surgery for your dog or cat, whether it’s something as routine as a lump removal or a bigger procedure, the days leading up to it and the week after usually raise the same questions. What do I need to do before drop-off? What actually happens while my pet is under anesthesia? How do I take care of the incision once we’re home? This guide walks through the process in order, from the pre-surgical exam to the follow-up appointment, so you know roughly what to expect at each stage. If you’re still comparing options, our directory of Denver veterinarians lists practices across the metro area, and you can browse the veterinary surgery category specifically for clinics that handle these procedures regularly.

Before surgery: clearance, fasting, and consent

Almost every non-emergency surgery starts with a pre-surgical exam and bloodwork. The vet is checking that your pet’s organs, especially the liver and kidneys, can process anesthesia safely, and that there’s nothing hiding that would change the surgical plan. In the Denver area this pre-op workup, often bundled with the exam itself, tends to run roughly $500-1,000 depending on how many diagnostics are included and whether X-rays are part of the picture.

You’ll also get fasting instructions, usually no food after a set time the night before, though water is often allowed until the morning. Follow these exactly: a full stomach during anesthesia raises the risk of vomiting and aspiration, which is one of the more serious complications a surgical team tries to avoid.

Before the day arrives, the surgeon should sit down with you and go over the specific procedure: what’s being done, what the alternatives were, and what the realistic risks and recovery look like for your particular pet. This is also when you’ll sign a consent form. A good sign of a well-run surgical practice is that this conversation feels unhurried and the vet answers your questions directly rather than rushing you to sign.

A common example: mass and lump removals

Not every surgery is dramatic. A large share of the soft-tissue procedures done at Denver clinics are mass or lump removals, cysts, benign growths, or masses that need to be biopsied. Pricing varies a lot by size and location on the body: a small, simple removal might land around $300, while a larger or more complicated mass, especially one near a joint or requiring wider margins, can run $1,800-2,400 or more at some practices. These figures are ballpark ranges drawn from Denver-area pricing and reviews, so treat them as a planning range rather than a quote. Your vet will confirm the actual price once they’ve seen the mass and know what’s involved.

Surgery day: drop-off, anesthesia, and recovery

On the day itself, you’ll typically drop your pet off in the morning and pick up later that same day, unless the procedure or your pet’s health calls for an overnight stay. After check-in, the team places an IV catheter, gives pre-anesthetic medication to keep your pet calm, and then induces general anesthesia once bloodwork is confirmed clear.

During the procedure, a technician monitors vital signs (heart rate, blood pressure, oxygen levels, and breathing) continuously while the surgeon works. This is standard practice and not something you need to ask for specifically, but it’s fair to ask the practice how monitoring is handled if it isn’t explained up front.

Afterward, your pet is moved to a recovery area to wake up from anesthesia under supervision. Waking up groggy, unsteady, or a little vocal is normal. Most pets are alert enough to go home within a few hours, though some clinics prefer to keep them a little longer to make sure they’re eating and moving normally first.

Picking up your pet: what the discharge instructions cover

When you pick up, expect a written discharge sheet along with a verbal walk-through. This usually covers:

What’s covered	What it typically means
Pain management	Oral medication sent home, dosed on a schedule for several days
E-collar / cone	Worn to stop licking or chewing at the incision
Activity restriction	Limited walks, no running or jumping, often crate rest
Incision care	How to check it daily and what’s normal vs. not
Follow-up visit	Usually scheduled 10-14 days out for a recheck or suture removal

Take this sheet seriously even if your pet seems fine that evening: anesthesia can mask discomfort for the first several hours, and pain often becomes more apparent the next day.

After surgery: monitoring the incision and managing recovery

For the first week or two, check the incision once or twice a day. Mild redness right along the incision line and a little swelling in the first 24-48 hours can be normal. What’s not normal: spreading redness, ongoing swelling, discharge (especially if it’s yellow, green, or foul-smelling), the incision opening up, or your pet suddenly seeming lethargic or refusing food. Any of those warrant a call to the surgical team the same day, not a wait-and-see approach.

Keep the e-collar on consistently, even overnight. Leaving a pet unsupervised for even a few minutes without it is the single most common reason incisions get reopened or infected. Activity restriction matters just as much: a torn incision from an excited jump down the stairs is a common and preventable setback.

Recovery specifics vary quite a bit by procedure and by pet, so always follow your own surgeon’s discharge instructions over any general guide, and call them directly if something looks off rather than guessing. The methodology page explains how we evaluate and rank the surgical practices in this directory, if you want to understand what goes into those listings.

Next step

If you’re still deciding where to have the procedure done, call ahead and ask how the practice handles pre-surgical bloodwork, pain management protocols, and what their follow-up process looks like. A clinic that walks you through these details clearly before you book is usually the same one that will communicate well on surgery day and after.