Dead vole in the garden

There was a dead vole in the woodland garden this afternoon.

I am always curious about what would kill a vole and not eat it.

Maybe it just died of natural causes.

As per the following link, we should all be wary of The Vole Menace:

http://www.unitedwildlife.com/AnimalsVoles.html

Particularly the part about how the odor of dead voles can cause headaches and nausea.