Saved to Favorites

Please contact the business for updated hours/services due to the COVID-19 advisory.

Full Servie Veterinary Clinic

General Info
Mon-Clair Animal Hospital is your local veterinary clinic in Millstadt, IL, providing excellent service to the entire Metro East area of southern Illinois. We have served the local area for more than 30 years. The well-being of your pet is our priority, which is why house calls are available. Our services include: • Surgery • Dentistry • Vaccinations • Preventive care • Microchipping • Spay and neuter Along with our full-service veterinary care, we offer boarding and grooming. Your pet knows the difference between us and the rest. Let us show you why our current clients refer us to their friends and family. Call Mon-Clair today to schedule an appointment.
Regular Hours
Mon - Fri:
  • Boarding
  • CareCredit
  • Grooming
  • Veterinary Hospital
Payment method
discover, master card, visa, cash, check, debit
Veterinarians, Pet Services, Pet Sitting & Exercising Services


Hi there!
Rate this business!
First-classBetter than mostAbout what I expectedNot the worst...Disappointing
Click to Rate
Share Review

Like this review? Share it on your social network to get the word out!

C G.



From the moment I met them 5 years ago I just moved here I had an emergency with my Standard Poodle Puppy. I had called a few Vet hospitals and told them my puppy cant walk. No one would help me They were to busy. And he was so sick!!! I cant go into it now. But the COMPASSION that Mon Clair Staff showed was amazing they didnt even hesitate and said COME IN! No questions askedx. and Dr Harris came outside picked him up out of the car and carried him inside. I was so upset and said I had to go to work and assured me he would stay with the puppy and find out whats wrong. I dont know if Dr knew that those words he said was EVERYTHING!!!! The compassion they have shown through the years and to even people I have sent because their own Vet was to busy. Mon-Clair will never turn away a needing person in need for their animal Cause as most know these animals are like family. And now my Poodle is my Service Dog and helps me everywhere because of everyones love here for the animals and the familys!

Review Image
Wyatt P.



I consider myself a regular at Mon-Clair. We've been clients for the last 7 years with great prices and better service. I have also told other people about them all the time

Samantha S.



They are great all around. Besides exceptional services, they are very affordable and have very flexible scheduling.

Michael C.



I've always had large dogs and have always brought them to Mon-Clair Animal Hospital. They take good care of your pets.

Bruce S.



Mon-Clair Animal Hospital is very professional and the staff truly cares about the animals they treat. Mon-Clair Animal Hospital is also one of he cleanest offices I have ever seen.

Bj G.



I have experience in the veterinary field, so I have a pretty good idea of what is going on with my pets. That is how I know that Mon-Clair is exceptional at keeping my dog at his best health and letting me know anything I might need to do.

Brian R.



The staff is very kind and personable. I have been going there for so long all I have to say is my first name! They know me and I'd recommend them to anyone.

Adriana M.



The services my pets receive at Mon-Clair Animal Hospital are excellent. They always answer my questions thoroughly. I worked in pharmaceuticals in the veterinary field so we are usually on the same page.

Jenny H.



The thing that is most important to me in a vet is that that actually care about the animals. At Mon-Clair that really shows through.

Kate L.



Their staff is wonderful. You can see how caring they are. They are great with the animals and it makes me feel like I can trust them.

Melissa J.



I've been taking my animals to Mon-Clair since the clinic opened. I can't imagine a more caring staff.



Mon Clair has been taking care...

Mon Clair has been taking care of all our animals for over 15 years. They go way beyond what one considers to be good service....they are exceptional. When my daughters 10 y/o dog Nelly was about 14 months old she got hit by a car breaking her front right leg at the elbow. We called their emergncy number. Dr. Miles called back in less than five minutes. She told us to meet her at the office instead of advising to go to the ER hospital. She treated Nelly, wrapped the leg and advised us to call first thing in the morning. Whebn called the next morning she provided us a list of VET's who could do the needed surgery. She gave us her professional opinion on what to expect. We settled on the Small Animal Clinic at U of I Champaign-Urbana. We are pleased that Mon Clair is our medical provider. They are exceptional people and medical providers.

Fran Hynes


Provided by Citysearch - 
The best animal care

We originally went to Dr Harres for a second opinion on Molly. We were impressed by his professional caring attitude. When we got our next dog we went to Millstadt with Sara. He provided care above and beyond for this timid rescue dog. Next came Lilly, an 8 year old puppy mill survivor. He was able to provide her health care and guidance to us for this frightened dog that had never been socialized. Now we have Zoey, a 9 year old rescue that needed spayed and was heart worm positive.. We trusted her surgery and care to Dr Harres and he has never let us down. We don't live in Millstadt but I will always make the trip to Monclair and recommend that other do the same. Our daughter feels the same about her cat care from Dr Harres. The services and products are reasonable and the care is Five Star!

Magpie J


Provided by Citysearch - 
Wonderful Animal Clinic

I was referred to Dr. Harres by a friend when I sought a 2nd opinion for my senior cat. The excellent and warm care he was given led me to transfer my other two cats to their clinic as well. Everyone at Mon-Clair goes above and beyond; its clear that they care deeply about each animal's welfare. Dr. Harres and his staff care for their patients as though they were their family pets too.

It's well worth the trip down to Millstadt. Your furball babies will thank you.




You could not ask for a better place to take your pets to. They are very personable, and very loving towards you and your animals. They are just the greatest. My dog had cancer and they could of taken us for alot of money, but Dr. Harres was very upfront with us and told us his true and honest opinion. I just can't say enough how wonderful they are.



Junior's favorite place

This business is exceptional. Not only were they available when I needed their services, they even sent a thank-you card for choosing their business. That's going above & beyond.