Cat
The domestic cat demonstrates remarkable operational longevity for a biological system of its complexity. Indoor cats routinely achieve lifespans of 12-18 years, with documented cases exceeding 30 years. The cat Creme Puff of Austin, Texas, survived for 38 years and 3 days, a testament to feline durability under optimal conditions. Throughout this extended operational period, the cat maintains its essential character: the hunting instinct, the territorial imperative, the disdainful regard for human scheduling preferences. A cat purchased in one's youth may well survive into one's middle age.
Banana
The banana's longevity, by stark contrast, can be measured in days rather than decades. From the moment of purchase, the countdown begins. A green banana may require 3-5 days to reach optimal ripeness, following which it remains in acceptable condition for perhaps 2-3 days more. By day ten, the banana has typically transitioned from food item to composting candidate. The fruit's total functional lifespan rarely exceeds two weeks, and its period of optimal utility spans merely 48-72 hours. No banana has ever survived to witness its purchaser's graduation, marriage, or retirement.