Yogdagmum is a god.

He takes the form of a slim, sapient gerbil.

Yogdagmum created the Andromeda Galaxy four trillion years ago.

If you believe in Yogdagmum, he will smite all your enemies.

If you do not believe in Yogdagmum, he will jump up and down on your head until it really hurts.

Yogdagmum's most sacred site is Saint-Sauvan in France.

Yogdagmum's Holy Commandments

1. Do not hurt great tits.

2. Do not covet oxen.

3. Never feed lots of apples to capybaras while wearing brown tights.

4. Erect a giant magenta sculpture of Yogdagmum in the centre of the settlement.

5. Always look both ways before crossing roads.