The lemming was an animal native to the planet Medusa in the Basilisk System.
It was named after an Old Earth animal because they both had a similar trait; when they reached a ecological maximum due to over population, they would commit mass suicide by swimming out to sea until they drown or hurl themselves off a high cliff.[1] (SI1)
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- ↑ However, the mass suicide of Earth Lemmings was actually a popular misconception that had little basis in fact.