Link: Animals on the Underground - The Animals
One of the animals: RavenQuote:
The animals, created using the tube lines, stations and junctions of the London Underground map were first spotted by Paul Middlewick in 1988. The original animal, the elephant was discovered while Paul was staring at the tube map during his daily journey home from work. Since then, the elephant has been joined by many others from bats to bottlenose whales .