The record to beat is 38 years and 3 days (Creme Puff, Austin, Texas, 1967 to 2005), and the cat in question would have to live to 2170. Median cat longevity in UK primary-care records is about 14 years (VetCompass), the oldest validated cat ever is 38, and no intervention has moved feline lifespan in a controlled trial; the one species with a drug in front of a regulator for lifespan extension is the dog (the FDA's veterinary centre accepted the indication for two Loyal drugs in 2023 and 2025), and the dog lifespan trials read out around 2029 to 2031 with gains of perhaps 10 to 25% on the table if they match the mouse data, which would turn a record of 38 into 47, not 150. 11% here is not a mortality estimate, it is the weight traders put on the words cat or alive meaning something else by 2170. Which species gets the first lifespan-extension approval, with cats filed under another species (mine): https://manifold.markets/w0lph/which-species-will-get-the-first-re

Does this include cats who are crypreserved and then go on to live to 150?

This is actually my plan for my cat.

Can this market be resolved before 2150?

@Duncan The very oldest of cats managed to live a few years past 30, with 38 being the world record (and #10 only living to 32). Recent articles suggest that the oldest living cat is 35 (and apparently not in good health). If, improbably, that sick and ancient cat somehow lives to 150, that'd mean the very soonest this bet could be resolved would be 2137.

This, of course, raises significant questions about how the market will be resolved, since the close date is specified as 2025?

@Duncan yes, if no cat alive now lives past 30, it can resolve in 2052.

@Duncan Fixed!