Wow...um I haven't checked back on this post in a few days. Thanks to everyone for their condolences.
It's totally my fault he got out, and I take full responsibility for it. Of course it's the owner's fault when an animal escapes...it's not the animal's fault. And thanks for the (obvious) reminder to be more diligent. I'll keep that in mind. Please also bear in mind that I didn't intentionally leave his cage wide open and hang a neon sign for him pointing to the exit...