Companion Animals

Healthy Pets, Healthy People http://www.cdc.gov/healthypets/index.htm

Zoonoses by Animal http://www.cdc.gov/healthypets/browse_by_animal.htm
Zoonoses by Disease http://www.cdc.gov/healthypets/browse_by_diseases.htm

Local Organizations (listed by state)
http://www.cdc.gov/healthypets/resources/local_organizations.htm

American Veterinary Medical Association (AVMA) "Care for Animals" webpage http://www.avma.org/careforanimals/CFAsiteindex.asp