Otter
The average otter lifespan ranges from 10 to 15 years in the wild, extending to 25 years in captivity. This biological clock, whilst respectable for a medium-sized mustelid, represents a significant limitation compared to synthetic alternatives. The otter's organic composition renders it susceptible to predation, disease, and what the Royal Veterinary College delicately terms 'the inevitable thermodynamic decay inherent to all carbon-based life forms.' Their self-healing capabilities, whilst impressive, cannot repair structural damage beyond a certain threshold.
Lego
The ABS plastic comprising standard Lego bricks demonstrates extraordinary temporal resilience. Studies by the University of Southampton estimate that a Lego brick will take 1,300 years to fully decompose in marine environments—a statistic that is simultaneously impressive and concerning. Bricks manufactured in 1958 remain fully compatible with those produced today, creating what the Danish National Archives describes as 'the most successful exercise in backwards compatibility since the development of the human handshake.' The environmental implications of this durability have prompted significant ethical debate.
VERDICT
Lego achieves a pyrrhic victory in longevity. The Leeds Environmental Impact Assessment notes that whilst the brick's persistence demonstrates superior durability, it also represents 'a haunting reminder that our plastic creations will outlive not only us but potentially our civilisation.' The otter's biodegradability, by contrast, aligns with natural cycles.