The Sunday Seven

Name seven varieties of the same kind of animal (i.e., bears, dogs, birds, etc.) that you would use to differentiate improvements of the next version of the Mac OS system.

This is wrong because Apple delayed Leopard until October so they could launch a bright shiny cellular phone that I don't want while waiting to updated the iMac and iPod that I do want.

I think we should just have different species of bats.
Big brown bats is the first (and lowest) level
Little brown bats
Red bats
Big eared bats
Northern long ear bats
Indiana bats (which are endangered so don't do anything stupid to those)
Hoary bats are the highest level