Our Doctors

John Russell, DVM

Texas A&M University Class of ‘75 – Dr. John Russell opened Cypress Square Animal Clinic on July 9, 1979 and has over 30 years of experience practicing veterinary medicine. Dr. Russell and his wife Barbara are involved in the local school districts and have been solid supporters of the local FFA organizations as well. Dr. Russell is a proud member of the Texas Shorthorn Association and served on the board for 6 years prior to him becoming Vice President. He and his wife are currently making a valid contribution to the Shorthorn cattle breed.

Karen Shill, DVM

Texas A&M University Class of ‘99  – Dr. Karen Shill became an Associate Veterinarian at Cypress Square Animal Clinic in 2001 and has been a valued addition to the practice. With 10 years of experience Dr. Shill adds a wonderful and caring touch to all of her patients and is able to perform ultrasounds if necessary. Dr. Shill and her husband Bryan have three beautiful daughters and enjoy competing in Tae Kwon Do as a family.

Sue Collier, DVM

Texas A&M University Class of 1990 – Dr. Sue Collier has been a canine and feline practitioner in the North Houston area since her graduation from Texas A&M College of Veterinary Medicine in 1990.  Dr. Collier strives to provide excellent care to each of her patients with a gentle, compassionate manner.  She also believes very strongly in client education and communication.  In her free time she enjoys spending time with her son and daughter.


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Office Hours

Our Regular Schedule


8:00am - 6:00pm


8:00am - 7:00pm


8:00am - 6:00pm


8:00am - 6:00pm


8:00am - 6:00pm


8:00am – 12:00 pm




Read What Our Clients Say

  • "Dr. Russell has always gone above and beyond for the care of our family's pets for several years."
    Jackie / Houston, TX