Hey Megan!

Here are a few groups I found in your area.

http://www.catsociety.org/

http://members.petfinder.com/~IN61/index.html

http://west.petfinder.com/shelters/IN256.html

For your guinea pig!

http://west.petfinder.com/shelters/IN71.html


I'll try to help out any way I can.