Buster contracted polio as a young child, which affected him later in his life.
Buster cared for sick, injured and abandoned animals during the Second World War.
Cats, dogs, rabbits, goats, bush babies, parrots, monkeys and even snakes were just a few of his wartime residents at his house, Clymping Dene.
He also wrote two instructional books: Love on a Lead and Natural Health For Your Pets.
He said his main regret about his loss of health was that it made it impractical to keep many animals during his final years.