Fiction:Toman

Founding
The Toman Empire is not Space-faring, rather tribal animals capable of hitching rides on space-ships.

Types
There are many Toman, but the only seen Toman are the Arctic ones, only seen once. THere are Forest-Toman, desert-Toman and Arctic Toman. The types thrive in conditions others wouldn't (Example: Arctic Toman live better in the Arctic then Forest Toman).

Intelligence
The Toman are very intelligent, yet do not advance to Civilization for unknown reasons. The most notable thing that Toman do is live in ruins that alien races have left. The Toman keep the buildings conditions as they were and live their lives there.

Currency
Toman currency is probably in gems and possibly food. This has been seen as a group of Toman have been seen playing a table game where there were gems next to each player.