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Season 37 · Episode 14
![Irrational Treasure [800th episode] still](https://image.tmdb.org/t/p/w300/nWtVTLvsT9FMMdtlgCNKtmYh1CD.jpg)
6.024mFebruary 15, 2026
Marge's crusade to get the family dog in better shape leads to her entering Santa's Little Helper in canine agility competitions and a trip to the National Dog Show in Philadelphia. There, Marge and Homer suddenly find themselves - and the dog - mixed up in a historical conspiracy adventure worthy of a "National Treasure" movie.