What are the opening hours?

Monday 8am - 8pm Tuesday 8am - 5pm Wednesday 8am - 8pm Thursday 8am - 5pm Friday 8am - 6pm Saturday 9am - 12pm

Williamson Animal Hospital

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Williamson, NY
Williamson Animal Hospital

Williamson Animal Hospital is a small animal hospital. This page will post updates of hours We look forward to serving you and your beloved pet!

Williamson Animal Hospital is a small animal hospital located in Williamson, NY. We are available for office calls 6 days a week and are pleased to offer you housecalls on Thursday afternoons. Our services include, surgery, dentisties, in house bloodwork and labwork, digital x-ray and more! We specialize in exotic animals such as birds, mice, hamsters, guinea pigs, rabbits, other rodents, snakes,

and all reptiles. Our veterinarian, licensed veterinary technicians, veterinary assistants and office staff are friendly, caring, and ready to help take care of your pet's needs. We know your animals are like a member of the family and we will treat them as just that!

08/20/2025

Upcoming Closings

The Williamson Animal Hospital will be closed on Saturday, Aug. 23rd and Aug. 30th. We will also be closed Monday, Sept. 1 for Labor Day.

Dr. Semilof will NOT be available for emergencies during these times.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700 or Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

We encourage you to follow us on Facebook for regular updates on news and hospital closings.

We apologize for the inconvenience.

This Mimi, a 14-year-old Siberian kitty. Siberian cats, formally Siberian Forest Cat, developed over thousands of years as forest cats in their native home of Russia. A fully grown Siberian can weigh as much as 17 to 25 pounds. Siberians are often called hypoallergenic because they produce less Fel d 1, that's the strongest among the eight known Fel d 1 allergens produced in cat saliva, which is deposited on their fur when they groom themselves, compared to other cats.

08/05/2025

Upcoming Closings

The Williamson Animal Hospital will be closed on Saturday, July 26th. We will also be closing early Wednesday, July 30th. Our hours will be 8 am to 5 pm. Dr. Semilof will NOT be available for emergencies during these times.

This Thursday and Friday, Aug. 7 and 8, we welcome Dr. Cousins who will be helping our patients out with their medical needs during Dr. Semilof's absence.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700 or Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

This is R***r Rue, an Australian shepherd, and he's all ready for his bath! Did you know that the ASPCA recommends bathing your dog only once every three months? Some dogs who spend a lot of time outside or those with skin problems may require more frequent baths. Dogs with loose facial skin or wrinkles may need special attention. To prevent dirt and bacteria from causing irritation and infection, clean the folds with damp cotton and thoroughly dry the areas between the folds.

07/22/2025

Upcoming Closing/Closing Early

The Williamson Animal Hospital will be closed on Saturday, July 26th.

We will also be closing early Wednesday, July 30th. Our hours will be 8 am to 5 pm.

Dr. Semilof will NOT be available for emergencies during these times.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700 or Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

We encourage you to follow us on Facebook for regular updates on news and hospital closings.

We apologize for the inconvenience.

This is Toefu, a 3-month-old kitten who has lots of extra toes! This trait in cats is called polydactyl, and many of our regular clients will fondly recall our office kitty Benny with his giant oven mitts for front paws. Toefu has 6 toes on his front feet and 5 toes on his back feet, making for some really big feet! The norm for a cat is 5 on the front and 4 on the back. According to Wikipedia, polydactyly is a congenital abnormality that can be inherited. Some cases of polydactyly are caused by mutations in a genetic enhancer that regulates expression of the sonic hedgehog (SHH) gene in the limb. (Sonic hedgehog!? Who knew!?) Both Jake, a Canadian polydactyl cat, and Paws, an American polydactyl cat, were recognized by Guinness World Records for having the highest number of toes on a cat, 28. Various combinations of anywhere from four to seven toes per paw are common. It is rare for a cat to have polydactyl hind paws only, and polydactyly of all four paws is even less common.

07/14/2025

Upcoming Closing

The Williamson Animal Hospital will be closed on Friday, July 18th and Saturday, July 19th.

We will also be closing early Thursday, July 17th. Our hours will be 8 am to 1 pm.

Dr. Semilof will NOT be available for emergencies during these times.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700, or Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

We encourage you to follow us on Facebook for regular updates on news and hospital closings.

We apologize for the inconvenience.

This is Roy, a 10-month-old gray tabby, and he's enjoying the dog days of summer! Do you know the difference between a tabby and a tiger cat? The signature "M" on the forehead is a sure sign your cat's a tabby, but it's all in the stripes. A tabby has distinct stripes, swirls and spots, where a tiger has narrow, vertical stripes. So, all tiger cats are tabby cats, but not all tabby cats are tiger cats.

P.S. Don't forget to protect your pets with flea and tick prevention!

07/03/2025

Happy Fourth of July

The Williamson Animal Hospital will be closed on Friday and Saturday, July 4th and 5th.

If you are a current client, please contact Dr. Semilof on her home phone at 315-483-2392 and on her cell at 315-573-4433.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700 or Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

We encourage you to follow us on Facebook for regular updates on news and hospital closings.

We apologize for the inconvenience.

This is Kevin, a 2-year-old Bulldog mix, with a face only absolutely everyone could love! Kevin and the staff at the Williamson Animal Hospital want to wish everyone a very happy and safe Fourth of July holiday weekend! Enjoy the fireworks, but leave the pets at home!

06/27/2025

VCA in Ithaca is offering 50% off an emergency fee for a limited time (now through July 15). You must scan the QR code and have the coupon with you for the discount.

06/23/2025

Upcoming Closing

The Williamson Animal Hospital will be closed on Saturday, June 28th while the doctor is out of town.

Dr. Semilof will NOT be available for emergencies during these times.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700 or Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

We encourage you to follow us on Facebook for regular updates on news and hospital closings.

We apologize for the inconvenience.

Summer has arrived! With all this heat, don't forget your sun hat, sunscreen, sunglasses and anything else to protect yourself from the sun. This is Remy, one of our favorite model kitties, and she's all about protection from the sun and whatever else comes her way.

06/11/2025

Upcoming Closings

The Williamson Animal Hospital will be closed on Saturday, June 14th AND Saturday, June 21st, while Dr. Semilof is out of town.

Dr. Semilof will NOT be available for emergencies during these times.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700 OR Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

We apologize for the inconvenience.

This is R***r Rue, a 3-year-old Australian Shepherd. With his hat on and patriotic bandana, he's already for a summer picnic! (No "hot" dogs for this canine!)

06/09/2025

The Williamson Animal Hospital would like to welcome our new licensed vet tech Sierra Brown.

Sierra has been interning/working with us since last summer, but this past May she graduated from SUNY Canton among the top of her class with an Associates in Applied Sciences, Veterinary Technology. She went on to pass her state exam to become licensed just a few weeks later!

We are so glad to have Sierra working with us as she continues her schooling journey to become a veterinarian. She has shown us that she is patient, kind and caring and takes pride in the care she gives to our furry patients.

Welcome CeCe!!

06/03/2025

The Williamson Animal Hospital took part in the Paws for a Cause fundraiser event through the Humane Society of Wayne County. We would like to thank all our clients who generously donated. Together we raised over $260 for the shelter and all their furry friends.

05/21/2025

Just a reminder that The Williamson Animal Hospital will be closed this Friday, Saturday, Sunday and Monday. Dr. Semilof will be out of town and can NOT be reached for emergencies.

In case you do have an emergency, we wanted to share with you Ark Urgent Care's Memorial Day holiday hours: Friday and Saturday, May 23 and 24, 8am to 10pm; Sunday, May 25, 9am to 10pm and Monday, May 26, 10 am to 6 pm. The phone number is 585-487-8700.

You may also call Rochester Emergency Veterinary Services at 585-775-0020.

The staff at the Williamson Animal Hospital wishes you all a safe and happy Memorial Day!

This beautiful collie is Lexi. She just celebrated her 6th birthday this week! We hope she had a wonderful day!

You can send us your pet photos via text at 315-589-8439. We love seeing them (and sharing them)!

05/07/2025

Upcoming Closings

The Williamson Animal Hospital will be closed on the following days:

Saturday, May 10th

Friday and Saturday, May 16th and 17th

Friday and Saturday, May 23rd and 24th

Dr. Semilof will NOT be available for emergencies during this time.

If you have an emergency, please call Ark Urgent Care at (585) 487-8700 OR Rochester Emergency Vet Services at (585) 775-0020

We ask that you please plan ahead with any medication requests.

We encourage you to follow us on Facebook for regular updates on news and hospital closings.

We apologize for the inconvenience.

Meet Jadzia! She's a 4-year-old tortoise shell domestic shorthair. This beautiful girl has 2 sisters, Kira, who looks very similar, and Annie, who is a brown, bronze, orange and golden tortie.

Address

4450 State Route 104
Williamson, NY
14589

Opening Hours

Monday	8am - 8pm
Tuesday	8am - 5pm
Wednesday	8am - 8pm
Thursday	8am - 5pm
Friday	8am - 6pm
Saturday	9am - 12pm

Telephone

+13155898439

Website

http://www.williamsonanimalhospital.com/

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