Large reptilian creatures native to the harsh world nicknamed Planet Hell, where Neelix and Tom Paris cared for a newly hatched infant in 2372 until its mother came back for it.
In the episode Parturition, Neelix and Tom Paris, at odds over Kes, are sent together by shuttle to look for food on a planet shrouded in trigemic vapours that the crew call Planet Hell. Attacked by a Kazon ship, they crash and take shelter in a cave.
The cave holds a clutch of eggs, one of which hatches into a small reptilian creature. With no parent in sight, the two men try to keep it alive and realise that it needs the nutrients in the planet's vapours, so they unseal the cave to let the fumes in.
The adult eventually returns. Neelix and Paris hide and watch to make sure it accepts the hatchling before they are beamed back to Voyager. The shared responsibility ends their quarrel. The creatures appear to be animals rather than a civilisation, though the pair treat the infant with great care.