Jumbo
Just before Jumbo's trip to America in 1882, Barnum had insured the elephant for $500,000. The policy expired once Jumbo stepped on American soil. The elephant was not insured at the time of his death. He had been brought into the United States as "breeding stock". No insurance company would cover livestock for accidents. Jumbo left no children  in spite of the fact that he had an elephant "wife" in the London Zoo named Alice. He had completely ignored her during the 18 years he had called London home. Alice was given black and a widow's cap to wear after the death of her "husband".