Randy has alerted me that the earlier reports of Cheetah the Chimp's death may be inaccurate. It seems a number of parties and news sources are claiming that the chimp was not Cheetah.
Obviously I have no idea, so I'll just go with whatever. Here's HuffPo on the topic.
One need only watch Antiques Roadshow or History Detectives to see how family lore about items around the house can be incorrect or a skewed version of a half-remembered story. Sounds like this may be true of Cheetah the chimp.
Goodnight, Mr. Chimp, wherever you are.