From Creatures Wikia
The Valentine Norns were created by Stef and use a genome which is based on the Golden Desert Norn but modified by Mummy. They love kiss-popping. Their first life stages are reduced and therefore they reach puberty earlier than normal norns do (at the age of about 40 minutes). After entering puberty the females are nearly always fertile, even after pregnancy. The sex drive of this norn breed is usually rather high.