Sep 2026
The staff when you walk in is so friendly. Lindzi took care of us today she is very nice, my dog loves her, All my needs for my hairy son were well taken care of. Definitely not going to any other animal hospital 😊
About Companion Lake Zurich
Located near Lake Zurich, Companion Animal Hospital has been providing quality medical care to cherished pets since 1973. The hospital is a clean and impressive facility, staffed with friendly, professional, and helpful individuals. They welcome pets from Lake Zurich, IL, and surrounding areas. The hospital offers thorough exams and effective treatments, demonstrated by the improvement of a dog's luxating patella. In times of pet emergencies, Companion Animal Hospital shows prompt professionalism, enabling pets to recover swiftly. The dedication to excellent care is evident in their ability to treat infections and ensure the well-being of valued pets and their families. Reviewers have praised the incredible veterinarian, Dr. Marrinan, for his compassionate service, especially towards feral cats. Many appreciate the warm and welcoming atmosphere, noting how all staff members are friendly and helpful. New pet owners have found their first visits calm and easy, thanks to the attentive responses to their questions.
Reviews
Sep 2026
The attention to detail provided at each visit is unmatched! Very transparent, kind, loving to both the humans and pets. We love companion and will continue referring our friends and family in the area!
They are patient, and provide you with all the knowledge you need to make a well informed decisions! We were back today with our newest Fur Baby Winnie. They went through all her rescue paperwork and created a plan & went over important pieces of information. My favorite part will always be the follow up texts from the office checking in on how they are feeling & doing after shots and medication.
I have seen some reviews mention them being a bit more expensive than… read full review
Jan 2026
Don’t have enough good things to say about Companion, especially Dr. Sweeney. Our dog, Bruda, had UTIs repeatedly & Dr. Sweeney & Dr. Marrinan were the only vets to actually investigate further and take our concerns seriously (& we saw at least 5 vets prior)! Our dog is now healthy & happy thanks to Companion. We are so thankful for all the guidance & support they have provided the past few years!
Photos
Hours
Monday 9AM - 7PM
Tuesday 9AM - 7PM
Wednesday 9AM - 7PM
Thursday 9AM - 7PM
Friday 9AM - 6PM
Saturday 8AM - 3PM
Sunday Closed
Good to know
- parking: lot
Location
917 South Rand Road, Lake Zurich, IL 60047
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