"For more than a century and a half, Patterson Dog & Cat Hospital has had the responsibility and honor of caring for Detroit’s animals. Established at 71 West Columbia in 1844 by Dr. James W. Patterson, an English immigrant and the only practicing veterinarian in Detroit at that time, the hospital has the distinction of being the oldest continuously operating small business in Detroit, the oldest veterinary hospital in the state, and one of the oldest hospitals of any kind in Michigan."

"For 140 years, the veterinarians of Hagyard-Davidson-McGee Associates, PLLC, have dedicated themselves to the health and well-being of the horse. In 1875, Dr. E.T. Hagyard, a graduate of Professor Dick's Veterinary College in Edinburgh, Scotland, came to Kentucky to treat a valuable shorthorn bull. Impressed with the quality of Dr. Hagyard's services, the shorthorn breeders urged him to move to Kentucky. Struck by the beauty of the countryside and because of the opportunities for himself and his three sons, Dr. E.T. Hagyard came to practice in Winchester in 1876. A year later, Dr. Hagyard moved to Lexington and in 1891, the E.T. Hagyard and Sons veterinary hospital was built on East Short Street.

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McClelland Small Animal Hospital is the oldest existing and operating animal hospital in Buffalo, New York.

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"Miller Clark Animal Hospital, established in 1903, is honored to be known as one of the longest running practices in New York. It is our commitment to provide quality veterinary care throughout the life of your pet. Our services and facilities are designed to assist in routine preventative care for young, healthy pets; early detection and treatment of disease as your pet ages; and complete medical and surgical care as necessary during his or her lifetime."

"For over a century, Case Veterinary Hospital has been caring for Savannah’s pets. Starting in 1909 with Dr. Erle Glenwood Case, and continuing through 2009, with Carla’s gradual takeover of the business, Case Veterinary Hospital is unique because it is the only veterinary hospital worldwide that can boast four direct generations of veterinarians. Each generation of has built on the trust that they would provide their patients with the best care available because the reputation of the hospital reflects not only on the family’s business but the family name."

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"Dr. Frank E. Rutherford Veterinary Hospital is Texas's oldest continuously operating veterinary practice. Doctor Frank E. Rutherford began practicing Veterinary Medicine as an unlicensed doctor in 1906 under the practice name of Dr. Frank E. Rutherford Veterinary Hospital. In 1920, Dr. Rutherford received a Non-graduate Veterinary License (#NG135) from the state of Texas."

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"The Raritan Animal Hospital was founded in 1929 by Dr. Mark Morris. Dr. Morris was a graduate of Cornell Veterinary School in 1926. A pioneer in the field of companion animal medicine, Dr. Morris was among the first veterinarians to focus on bringing biochemical analyses into clinical practice. He had one of the only veterinary clinical pathology laboratories in the country."

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