You can change the life of a cat or kitten by becoming a foster volunteer and opening your home and heart to a foster friend.

Is fostering right for you?

There are many things to consider when deciding to foster an animal.

Foster caregivers must:

  • Be at least 18 years old
  • Complete a foster care application and sign a foster care agreement
  • Sign up as an “on-deck” foster, ready to pick up your cat or kitten within a 36-hour timeframe
  • Be able to set aside time (as often as every two weeks for kittens) to bring your foster animal in for follow-up vaccinations and spay/neuter surgery
  • Take on the responsibility for routine care in your home during the foster period
  • Ensure that animals can be fostered in your home
  • Isolate foster animals from family pets within the home, as required
  • Quarantine your foster animals for 14 days to prevent disease spread, as required
  • Kitten-proof your home to reduce potential safety hazards
  • Maintain a peaceful, loving environment for the foster animals and spend quality time socializing them
  • Utilize the emergency contact number for after-hour emergencies
  • Maintain communication with the Foster Program Coordinator
  • Commit to the entire foster period with the animal
  • Try to spend a minimum of two hours per day with kittens to socialize them and monitor their health (time commitments will vary depending on your foster animals). For socialization and enrichment ideas visit

In addition:

  • Existing animals in your home must be up-to-date on vaccines and in good health
  • Every family member in the household will need to be prepared for the commitment and emotions involved with fostering


Download the Foster Manual - A Guide for Cats & Kittens


Please read the following instructions carefully, as any animal that does not meet the outlined physical parameters for surgery (over/underweight, undisclosed medical conditions, vomiting anything other than bile), will be declined for surgery, and charges will apply. If your pet has a medical condition or is currently on medications, please call us to confirm whether he/she is a good candidate for surgery within our program.

At the time of booking, please notify staff of any behavioural issues(fear, nervousness, aggression), to protect the safety of staff and enable surgery to proceed.

In order to protect your pet from the possibility of contracting an illness while in our care, we recommend that you have your pet vaccinated at least two weeks prior to your appointment. Otherwise, vaccinations will be available at the time of surgery. We do recommend pre-anesthetic bloodwork for all animals.  Please note that bloodwork must be done within two weeks of your surgical appointment. All animals between the ages of 4 and 5 will require pre-anesthetic bloodwork within two weeks of the surgical appointment.

Animals must be between the ages of 4 months and 5 years, within normal weight range according to the following criteria: Royal Canin Dog Charts or Royal Canin Cat Charts and be in good health. Please advise us of any illnesses/treatments at the time of booking, or as soon as anything develops prior to surgery. Animals with certain allergies will not be accepted. Any female dogs that demonstrate signs of heat (bleeding and/or swelling of vulva) shortly before their scheduled surgical appointment will need to be rescheduled to reduce surgical risks – contact us as soon as signs are noticed.  Males require both testicles present in the scrotal sac.

All food should be removed from adult animals at 6pm the evening prior to surgery, as vomiting while under anesthesia could be fatal! They should continue to have access to water. Pets must be kept indoors or confined to ensure no food is consumed. Animals that vomit undigested food, clothing or foreign objects at any time during the medical process will be declined for surgery. Charges will apply, and the appointment will have to be rebooked. All animals between the ages of 4 and 5 will require pre-anesthetic bloodwork within two weeks of the surgical appointment.

** Note: Great Danes will require pre-anesthetic blood work between the age of 4 and 5 years, prior to surgery.
** Note: Bulldogs and other brachicephalic breeds must be free of any breathing difficulties.

Check-in time is at 8:00 AM. If you arrive after 8:30 AM we will not be able to admit your pet for surgery - we will ask you to reschedule and your prepayment will be forfeited.

  • We recommend that you bring someone with you to stay with your animal while you complete the paperwork, as our lobbies cannot accommodate multiple animals during the admission process.  This will also prevent increasing the stress level of all visiting cats and dogs.
  • Please complete one admission form per animal when you arrive.
  • All dogs must be on a leash and all cats must come in individual carriers.
  • All appointments are prepaid at the time of booking. We accept credit card over the phone, debit, Visa-debit, money order and cash payments in person.
  • Appointment changes and cancellations need to be made more than 1 business day before the appointment in order to avoid losing your deposit.
  • Additional services, such as vaccines, microchips, etc, can be paid for the morning of surgery.
  • Animal pick-up is at 4:00 PM. It is imperative that you be present at the exact pick-up time, as this is when post-operative instructions are given for all animals.



What to expect when you get your pet home
Your pet has had major surgery,which requires general anesthesia. The patient is completely asleep and unable to feel or move. In female dogs and cats, the uterus and ovaries are removed through a small incision in the abdominal wall. Females are unable to get pregnant. In both male dogs and cats, the scrotum is not removed, only the testicles. Removal of the testicles prevents production of sperm and the male dog or cat will no longer be able to father puppies or kittens. Your pet has received pain medication.

Surgical Site
Female dogs and cats have a mid-line incision in their abdomen. Male dogs have an incision just above the scrotum and male cats have two incisions, one in each side of the scrotum. Check the incision site daily. What you see on the day of surgery is what we consider normal. There should be no drainage. Redness and swelling should be minimal. Males may appear as if they still have testicles -- this is normal, the swelling should subside gradually through the recovery period. DO NOT ALLOW YOUR PET TO LICK OR CHEW AT THE INCISION. 

To avoid this, we strongly recommend you purchase an e-collar or a surgical onesie. If your pet licks, he/she can open the incision or cause infection, incurring additional veterinary costs. For your convenience, the e-collars can be purchased (and fitted) at our clinics for $16, or a surgical onesie for $31. Both are also available at most pet stores. The collar or onsie should remain on your pet until new (pink) tissue appears at the incision site (7-10 days).

In Heat
If your female dog or cat was in heat at the time of surgery, you must keep them away from un-neutered males for at least two weeks. While they are unable to become pregnant, they will still attract intact males, for a short period of time.

Unless you are told otherwise, your pet does not have external sutures. All sutures on the inside are absorbable and the very outer layer of skin is held together with water soluble surgical glue. Do not clean or apply topical ointment to the incision site. If you are told that your pet has skin sutures or skin staples, they will need to return in 7-10 days to have those removed. Male cats do not have any sutures.

If your pet has received their first set of vaccines at the time of surgery they will require boosters from your primary veterinarian.

Some animals are active after surgery, while others are quiet. It is very important that you limit your pet's activity for the next 7-10 days. No running, jumping, playing, swimming, or other strenuous activity during the 7-10 day recovery period. Pets must be kept indoors where they can stay clean, dry, and warm. Do not bathe your pet during the recovery period. Dogs must be walked on a leash and cats must be kept inside. Keep your pet quiet. Dogs and female cats have internal sutures and external skin glue that provide strength to the tissue as it heals. Any strenuous activity could disrupt this healing process. The healing process takes at least 7 days.

Your pet's appetite should return gradually within 24 hours of surgery. Lethargy lasting for more than 24 hours after surgery, diarrhea, or vomiting are not normal and you should contact us immediately. Do not change your pet's diet at this time and do not give junk food, table scraps, milk or any other people food for a period of one week. This could mask post-surgical complications.

Potential Complications
Spaying and neutering are very safe surgeries; however, complications can occur. Minimal redness and swelling should resolve within several days. If it persists longer, please contact us. Please contact us immediately if you notice any of the following:

  • Pale gums
  • Depression
  • Vomiting
  • Diarrhea
  • Discharge or bleeding from the incision
  • Difficulty urinating
  • Labored breathing

Your pet received pain medication to manage post-operative pain. Pain signs include:

  • Sitting or lying in an abnormal position
  • Restlessness, trembling or shaking
  • Constant or intermittent whining
  • Licking or chewing, or attempting to lick or chew, at the incision site
  • Hiding or other unusual or unsociable behavior


If you have any questions or concerns directly related to the surgery during the recovery period, please call 905-898-6112 Ext 2, or toll-free at 1-888-668-7722 x387 (Stouffville)  or 705-734-9882 x2 (Barrie)

If there is an emergency after hours, contact your regular veterinarian or emergency hospital.

We will treat, at minimal cost, any post-op complications resulting directly from the surgery. Your regular veterinarian must address illnesses or injuries that are not a direct result of surgery. Please call for an appointment as soon as you see cause for concern. We cannot be held responsible for complications resulting from failure to follow post-op instructions, or for a contagious disease for which the animal was not previously properly vaccinated.



Book Today! Our spay/neuter services are open Monday to Friday, with one Saturday per month

  • Based on a business and operational model developed by Humane Alliance: high quality, high volume, self-sustaining.
  • Open to everyone regardless of geography or income level (the public, shelters and animal rescue groups).
  • Hours: 8-4 Monday through Friday, with one Saturday per month.
  • Clients are encouraged to develop a regular relationship with their local full-service veterinarian and to educate themselves about responsible pet ownership. Visit for more information.

Spay Neuter Services FAQs


Estimated Waitlist Status

Barrie                          Stouffville
(Just outside Newmarket)
Male Cats  no wait time   Male Cat no wait time
Female Cats   6 months   Female Cat  no wait time
Small Male Dogs 4 months   Male Dogs 3 months
Small Female Dogs 10 months   Female Dogs 3-4 months
Large Dogs 10 months      


Ontario SPCA Centre Veterinary Hospital
16586 Woodbine Ave
Stouffville, ON
L4A 2W3
Phone: 905-898-6112 or 1-888-668-7722
Fax: 905-898-4321

Ontario SPCA Marion Vernon Memorial Animal Clinic
91A Patterson Road
Barrie, ON
L4N 3V9
Phone: 705-734-9882
Fax: 705-720-7321


Additional Spay/Neuter services are available through the following organizations:

The Windsor/Essex County Humane Society Veterinary Clinic is open in Windsor. Please visit their website or call 519-966-1118 to make an appointment.

The Welland & District SPCA is open at 700 E. Main Street in Welland.  Please visit their website or call 289-820-9651 to make and appointment.

The North Bay & District Humane Society Pet Clinic is open in North Bay. Please visit their website or call 705-478-8233 to make an appointment.

The Lincoln County Humane Society is open at 160 Fourth Avenue in St. Catharines. Please visit their website or call 905-688-7722 to make an appointment.

2018 Fees for Ontario SPCA Spay Neuter Services:

*Non-Ontario SPCA spay/neuter protocols, fees and available services may vary.



*2018 Fees


Female cat



Male cat



Female dog, small


under 20kg/44lbs

Female dog, medium



Female dog, large



Male dog, small


under 20kg/44lbs

Male dog, medium



Male dog, large



(Neuter = male, Spay = female)


Additional surgical services/surcharges

Open umbilical hernia repair


Cryptorchid (undescended testicle), palpable


Nail trim

No Charge with surgery


* Pregnancy termination – contact your local clinic to discuss

Note:  All animals must be between the ages of four months and five years and be in good physical condition, including being an appropriate weight for our program

Royal Canin - Dog Charts

Royal Canin - Cat Charts


It is recommended that you have your pet vaccinated at least two weeks prior to your spay/neuter appointment. Animals that have been vaccinated previously should be accompanied by proof of vaccination.  Should you be unable to have this done in advance, vaccines can also be given at the time of surgery.  We recommend that your pet have the following vaccines:



Rabies 1yr*




Feline Leukemia



*Note: It is a legal requirement and strongly recommended that ALL animals be vaccinated for rabies regardless of whether or not they go outside. If your animal is currently vaccinated for rabies, proof of vaccination should accompany your pet at the time of surgery.



Rabies 1yr*





$26 provides your pet with a unique, permanent form of identification.  All shelters and many vet offices have the ability to read microchips, and your animal would be returned to you safely and quickly should it become lost.  This fee includes an offer of 30 days of free pet health insurance.  *Insurance offer does not apply to animals owned by rescue/shelter organizations.


E-Collars / Surgical Onesies
We STRONGLY recommend that all animals be deterred from licking their surgical sites through the use of E-collars or surgical onesies.  If your animal does lick, they can open their incision or cause infection, incurring additional veterinary costs.

E-collars can be purchased the morning of surgery for $16.  (Note:  If you choose to purchase your e-collar from a pet store, please ensure that when pushed back against your pet’s shoulders, the collar extends at least 1" past his/her nose).

Surgical Onesies can be purchased on the morning of surgery for $31.


A deposit is due at the time of booking in order to obtain an appointment.  Credit card payments can be made over the phone, and debit/Visa-debit/cash payments can be made in person, at our offices.  Money orders can be mailed of your choice, made payable to the Ontario SPCA (please include your phone number on the money order).


Next Steps
Please read the pre and post-operative instructions and then register for the waiting list.


The Ontario SPCA spay/neuter services are high quality, high volume, self sustaining operation. The public, shelters and rescue groups are welcome, regardless of geography or income level. The pet overpopulation issue is a direct result of animals left unaltered, so spay or neuter your pet today!

  • The pet overpopulation issue is a direct result of animals left unaltered
  • Thousands of homeless animals across the province end up in shelters
  • Spaying and neutering is a straight-forward medical procedure with many health benefits, including the reduction in the risk of developing certain cancers and illnesses
  • Clinics utilizing this spay/neuter model in the US have reduced shelter admissions and euthanasia by up to 70%!
  • In 2014, Toronto Animal Services estimated that there are 100,000 feral cats in Metro Toronto
  • Data collected at our spay neuter services shows that >50% of spay/neuter clients have no previous relationship with a veterinarian

To make an appointment at one of our 2 locations:

  • 905-898-6112 (Ontario SPCA Centre Veterinary Hospital, Stouffville - just outside of Newmarket)
  • 705-734-9882 (Ontario SPCA Marion Vernon Memorial Animal Clinic, Barrie)
  • OR register online.