Avocado
The avocado presents a fascinating study in temporal fragility. From the moment of harvest, this specimen embarks upon a ruthlessly narrow window of optimal consumption—approximately forty-eight hours of perfect ripeness sandwiched between unyielding hardness and brown decay. Its skin offers modest protection, yet the flesh beneath succumbs to oxidisation within mere minutes of exposure. The pit, curiously, demonstrates remarkable hardness, capable of dulling kitchen implements.
Wolverine
Wolverine's durability represents perhaps the most extensively documented regenerative capacity in fictional biology. His healing factor enables recovery from wounds that would prove fatal to ordinary organisms—including, as documented in multiple accounts, complete cellular reconstruction following near-total physical destruction. The adamantium bonded to his skeleton provides structural integrity exceeding that of any known natural material, rendering the subject effectively indestructible under standard combat conditions.