The Short Version
Guinness World Records has verified that a domestic cat named Creme Puff lived 38 years and 3 days, directly proving that domestic cats can surpass 30 years of age. The claim uses "can," which asserts biological possibility — and even a single verified case is sufficient to establish that. While such longevity is extraordinarily rare (the average cat lifespan is roughly 12 years), rarity does not negate possibility.