From Creatures Wikia
The Shadow Bengals are a Bengal Norn variant by Grendel Man. They live in the shadows, as light will hurt them. They can survive for a time in light, but will eventually get a hurt expression onto their faces and start limping if exposed to light for an extended period of time. They make good Grendel hunters, but due to their sensitivity to light, their hunting range is limited. It is recommended you get the Moon Light Norn agents to make it easier to care for the Shadow Bengals. They like to use teleporters when crowded (which can lead to complications). They are able to eat detritus, and are able to store Alcohol until a time when they need Starch.
They can be found at KnyteTrypper's C3/DS Nexus