PeopleNeedingCats 
A mailing list for people who are looking to adopt cats or kittens from a rescue organization or other place.
http://groups.yahoo.com/group/PeopleNeedingCats/Special Mutt
A mailing list dedicated to mutts and rescue dogs.
http://groups.yahoo.com/community/AASpecialMutt
CatsNeedingHomes
A mailing list for posting cats and kittens available for adoption.
http://groups.yahoo.com/group/CatsNeedingHomes/
Petrescuenet
Members of pet rescue organizations and those interested in adopting, fostering or caring for pets are invited to join.
http://groups.yahoo.com/group/petrescuenet/
PeopleNeedingDogs
E-mail list for individuals looking for a dog. Dedicated to re-homing dogs in need, regardless of size, color, or breed.
http://groups.yahoo.com/group/PeopleNeedingDogs/
DogsNeedingHomes
An e-mail list dedicated to rehoming dogs in need. Information on how to join, and online message archives.
http://groups.yahoo.com/group/DogsNeedingHomes/
Animal Rescue and Adoption
Online group for those who have animals needing homes and/or for those who are looking for new pets.
http://groups.yahoo.com/group/animalrescueandadoption/
