Well, them nerves are pretty interesting things.
My house is almost like a zoo. I've got not only geckos, but also:
1. Toads (especially when it rains)
2. Whip-tail scorpions (they're not poisonous but they do spray a vinegar-like compound when threatened from their "tail". You can smell it when you step on 'em).
3. Tree frogs (pretty cool! Only happened twice, though)
4. Fruit bats (every nite like clockwork)
5. Squirrels (

)
6. Shrews (my dogs often mistake them for rats that they kill)
7. Rats (my dogs kill them for sport)
8. Stray cats (my Rottweiler mauls them for sport)
9. Ants (Red and cook)
10. Butterflies and other insects
Yes, it's like living in a zoo with nasty perks