Thornwood Staff

About Thornwood Vet Clinic

Thornwood Veterinary Clinic is located on 23-acres off Buttrick Avenue in Cascade Township. The property was originally part of 80 acres homesteaded to Oliver Johnson on April 25th, 1836 by the United States government. It was operated as a dairy farm during the early 1900’s and converted to a dog boarding facility by the Buttrick family in the 1950’s.

History of the Practice

Dr. Gary Knapp began practicing veterinary medicine here in the late 1960’s and Thornwood Veterinary Clinic & Kennel was established September 21st, 1972 by Dr. Raymond R. and Marilyn K. Leali.

The Clinic is still owned and operated by the Leali family, with Dr. Leali seeing patients on a part time basis and Keith Leali (Dr. Leali’s son) managing the day to day operations.

Our Vet Clinic Staff

Vet Dr. Kyle Grusling with Family

Dr. Kyle Grusling, DVM


Dr. Kyle Grusling graduated from Michigan State University with a degree in Animal Science in 2007 and went on to the College of Veterinary Medicine, graduating in 2011. After graduation, Dr. Grusling pursued a rotating internship in small animal clinical medicine at Animal Specialty Group in Los Angeles, California. Upon completion of her internship, she accepted a surgical internship at Veterinary Surgical Centers in Vienna, Virginia.

Dr. Grusling then moved home to Michigan and worked in emergency medicine for three years before deciding to pursue a career in general practice. Dr. Grusling has a special interest in surgery, as well as preventative care. She enjoys building relationships with clients that last from puppy or kittenhood through a pet’s twilight years. When she’s not at work, Dr. Grusling enjoys spending time with her husband, Joe, two sons, Mason and Beckett, as well as their two cats, Fiona and Isabel and their Golden Retriever, Agnes.

Vet Dr. James Knopp

Dr. James M. Knopp, DVM


Dr. Knopp is a 1982 Graduate of Michigan State University School of Veterinary Medicine. He gained experience in many facets of veterinary practice during five years of relief work at over 30 practices in the West Michigan area. Prior to that, he worked for two years at the Animal Emergency Clinic. Most recently, he spent 18 years in private practice in the Middleville area. He joined his longtime colleague and friend, Dr. Leali, at Thornwood in July of 2008.

Dr. Knopp currently resides in Byron Township with his fiancée and their Irish Setter, Luke. He enjoys a variety of hobbies including bicycling, writing, golfing, and yard work (he actually loves mowing lawns!).

Dr. Knopp is now partially retired and is only seeing patients while working relief or covering vacation days for another Veterinarian.

Vet Raymond Leali

Dr. Raymond R. Leali, DVM

President and Veterinarian

Dr. Leali is the original founder of Thornwood Veterinary Clinic, having opened the clinic in September of 1972. He has an honorable discharge from the USMC and is a graduate of Michigan State University, where he graduated Phi Zeta from the college of Veterinary Medicine in 1968. He began his first year in a mixed animal practice in southern Indiana. Dr. Leali then moved to northern Indiana where he spent the next 3 1/2 years in the equivalent of a small animal surgical residency. He enjoys many aspects of Veterinary Medicine but has special interests in small animal surgery, cardiology, orthopedics, neurology and dermatology.

Dr. Leali is now fully retired and no longer has regularly scheduled hours.

Keith Leali

Keith Leali

Vice President and Operations Manager

Keith is the son of business founders, Dr. Raymond R. and Marilyn K. Leali. After 18 years living outside of Michigan, he is back at Thornwood since April 2007. Keith holds a BS Chemistry degree from Michigan State University, 1992, and an MBA from the University of Findlay, 2000. He grew up at Thornwood and worked in the kennels until High School graduation in 1987. Following college he spent 15-years working in R&D and Production Management with Cooper Tire Company.

Keith and his wife Chris have 5 children. There pets include several cats, a flock of backyard chickens and a herd (fold) of Scottish Highland cattle.

Vet Tech Samantha Minnema

Samantha J. Minnema

Licensed Veterinary Technician

Samantha has been working in veterinary clinics for most of her life. She is a 2007 graduate of Baker College where she earned her Associates Degree in Applied Sciences. She has a special interest in exotic animal medicine (especially reptiles & big cats!), and after graduation she completed a three-month internship at Potter Park Zoo in Lansing. In the same year, she passed her National and State board examinations to become a Licensed Veterinary Technician. Roughly two years after receiving her license, Samantha joined the staff at Thornwood Veterinary Clinic to continue her career as our full time Veterinary Technician. Most importantly, she shares her home with four furry friends who she loves so much: Pocket, Rupert, Alan, and Monroe!

Marc VanOtteren

Marc Van Otteren

Receptionist / Veterinary Assistant / Kennel Staff

Marc is the “really tall guy” at Thornwood Veterinary Clinic. He joined Thornwood in August of 2000 while still attending Grand Rapids Christian High School. Marc has done everything at Thornwood from kennel staff, front desk, and general maintenance to his current position as veterinary assistant. Marc holds an Associates Degree from Grand Rapids Community College and is currently enrolled in the Radiology Technology program. His furry companions include a black lab named Roxy, a loveable mutt named Molly, and a cat named Oscar. In his free time Marc enjoys cycling (he rode coast to coast twice with Sea to Sea), hockey and many other outdoor activities.

Groomer MIchelle O

Michelle O.

Groomer/Pet Stylist

Michelle has worked in the pet industry for the last 15 years. In 2007, she began grooming, and her talent for it continues to grow. In her spare time, she loves to be with family, do crafts, and read. At home she enjoys taking care of her animal friends “Shelby,” a poodle mix, and her two cats “Sam” and “Tuffy.”