This 92-year-old retired veterinarian has been making "wheelchairs" for paralyzed animals for over 60 years

AOL.com Editors

Retired veterinarian, Dr. Lincoln Parkes, has dedicated more than 60 years to building custom-made carts for paralyzed animals. At 92-years-old, Dr. Parkes has helped hundreds of animals, including dogs, cats, rabbits and chickens, regain mobility through these carts, which in function resemble a wheelchair.

"I retire every day around midnight. That's the only retirement I get, but I'm having fun doing something useful," Dr. Parkes exclaimed.

Watch this episode of "Lifers" in the video above.

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