Bat stats

I am considering a bat for a familiar. Unfortunately I couldn't find convincing ArM stats for a bat.

Can anyone point to where I might find bat stats? (any edition of the game)
Failing that, which would be the closest animal with known stats that you would adapt? (And what adaptations would you suggest?)

Thanks in advance!

Received Magi of Hermes saturday.
And you know what? I has official stats for bats :smiley:

Page 10, to be precise :slight_smile: It's a small animal (size -9) with a single power: Eyes of the Bat.

Oh well, seems like my question came at the right time. Thanks.
I guess this means I'll get the rest with a visit to my FLGS...

May we expect these stats to be added in the "book of mundane beasts" PDF ?