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  • Here For You Around The Clock

    Emergency Care in Crystal Lake

    At Companion Animal Specialty and Emergency Hospital, we have veterinarians specially trained to provide compassionate and dedicated emergency medical care and triage.

    Emergency Services

  • Advanced Veterinary Care in Crystal Lake

    Meeting Your Pet's Specialty Healthcare Needs

    Our team at CASE Hospital is here to meet your pet's needs. Our board-certified specialists and highly-trained veterinarians offer a range of specialized care.

    Specialty Services

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Diagnostics & Lab

Our in-house veterinary lab allows us to complete advanced diagnostic testing accurately and efficiently so your pet's care can begin as soon as possible. 

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ER Services

You can count on CASE Hospital to be ready 24/7 on Thursdays through to Tuesdays to manage your pet's emergency needs.  

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Veterinary Care You Can Count On

Welcome to Companion Animal Specialty and Emergency Hospital in Crystal Lake

We are a specialty and emergency hospital offering comprehensive specialist and critical care services to cats and dogs in Crystal Lake and the surrounding areas.

We offer a range of specialty services including internal medicine, and  integrative medicine to help pets suffering from complex conditions, injuries, or diseases.

We care for Crystal Lake’s companion animals and have developed a reputation over the years for quality, professional care with a compassionate touch.

Our team of experienced Crystal Lake vets are proud to live up to the standards of veterinary excellence laid out by the American Animal Hospital Association!


About Our Hospital

  • We were very concerned about our 17-year-old chihuahua. They got us right in to see a doctor. They listened to our concerns and addressed what they could which was very comforting. Overall, polite, professional and practical. Thank you!
    - Bryan

Stay Informed

Tips & Advice From Our Team

Whether you are looking for advice on emergency conditions or information on common pet illnesses, our informative blog features valuable tips and advice from our Crystal Lake vets that will help you to keep your pets healthy and happy.

How to Help a Dog With Allergic Dermatitis

How to Help a Dog With Allergic Dermatitis

Did you know that dogs can also experience allergies and the reactions that usually accompany them? One of the most common reactions is the development of 'hot spots', also known as allergic dermatitis. In this post, our Crystal Lake vets talk about the different types of allergies affecting dogs which may result in allergic dermatitis and how it can be diagnosed and treated.

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What is Veterinary Cold Laser Therapy?

What is Veterinary Cold Laser Therapy?

If your pet is healing from a procedure of injury then you may be wondering if there are any supplemental therapies that can also help in a non-invasive manner. Our Crystal Lake vets discuss the use of veterinary cold laser therapy for pets, how it works and if it can be used in place of medicine.

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Osteoarthritis in Dogs: Causes, Symptoms & Treatment

Osteoarthritis in Dogs: Causes, Symptoms & Treatment

Osteoarthritis is a painful condition where your dog's joint will gradually degenerate over time making it difficult for them to move around. Unfortunately, there is no known cure, but our Crystal Lake vets offer some treatment options to help dogs with osteoarthritis live more comfortably.

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Expert care in McHenry County

Address & Hours

Companion Animal Specialty and Emergency Hospital proudly serves patients in Crystal Lake and beyond.

Emergency Care

We see emergency and critical care cases 24 hours a day on Mondays, Tuesdays, Thursdays, Fridays, and the weekend.

Specialty department hours vary week by week.

Contact Us


1095 Pingree Rd 120, Crystal Lake, IL 60014 US

Phone Number

(815) 479-9119

New Patients Welcome

Companion Animal Specialty and Emergency Hospital is accepting new patients! Our specialists and experienced emergency veterinarians are passionate about restoring good health to animal companions in Crystal Lake.

Contact Us

(815) 479-9119 Contact