what was the cause of death for the race horse Seabiscuit,please list your source?

Question

what was the cause of death for the race horse Seabiscuit,please list your source?

Answer 1

This is the best I could find it does not list a cause of death but he was old for a horse when he died



On April 10, Seabiscuit's retirement from racing was officially announced. When he was retired to the Ridgewood Ranch near Willits, California, Seabiscuit, the horse nobody wanted, was horse racing's all-time leading money winner. Put out to stud, Seabiscuit sired 108 foals, including two moderately successful racehorses, "Sea Swallow" and "Sea Sovereign". Over 5,000 visitors made the trek to Ridgewood Ranch to see Seabiscuit in the seven years he spent there before his death.

Answer 2

He was retired and lived a good life:



On April 10, Seabiscuit's retirement from racing was officially announced. When he was retired to the Ridgewood Ranch near Willits, California, Seabiscuit, the horse nobody wanted, was horse racing's all-time leading money winner. Put out to stud, Seabiscuit sired 108 foals, including two moderately successful racehorses, "Sea Swallow" and "Sea Sovereign". Over 5,000 visitors made the trek to Ridgewood Ranch to see Seabiscuit in the seven years he spent there before his death.

Answer 3

Seabiscuit's death ws a heart attack @ 14yrs old in the night, He stall man was awakened by noise in Seabiscuit's stall. Seabiscuits was on the floor struggling, he died w/in 10 minutes. NYT obituary May 19th, 1947.