Links:

Missouri Alliance for Animal Legislation
Humane Society of Missouri
ASPCA

Looking for a pet?

Petfinder.com - Enter your criteria, you'll find some great "Best Friends"
Stray Rescue of Saint Louis - An extensive list of great dogs that have been certified adoptable.
Saint Louis Senior Dog Project - With the busy life of a law student, having the companionship of a pet without having to train it saves many hours. Considering a dog that's a couple years old is a great idea.