Hedgehog
The average hedgehog lifespan in the wild is 2 to 5 years, with exceptional individuals reaching 7. This represents approximately 0.0000001% of the Moon's age. Hedgehogs as a species have existed for 15 million years, which sounds impressive until one considers the competition.
Individual hedgehogs require food, water, shelter, and an absence of motor vehicles to survive. Their mortality rate from road traffic alone is distressing. They are, biologically speaking, temporary.
The Moon
The Moon has existed for 4.5 billion years and is expected to continue orbiting Earth for several billion more. It requires no food, experiences no predation, and cannot be struck by motor vehicles. Each year, it drifts 3.8 centimetres further from Earth, but this represents the astronomical equivalent of taking one's time.
The Moon witnessed the formation of life on Earth, the extinction of the dinosaurs, and the invention of both fire and reality television. It will likely witness humanity's departure as well.
VERDICT
Comparing a lifespan of 5 years to 4.5 billion years seems almost cruel. The Moon has been present for every hedgehog that has ever existed and will remain long after the last hedgehog has shuffled off this mortal coil.