Population of pets -- Pet ownership -- Dog ownership -- Cat ownership -- Bird ownership -- Horse ownership -- Other pet ownership -- Breeds of pets -- Dog breeds -- Cat breeds -- Demographics of pet ownership -- Pet ownership demographics -- Dog ownership demographics -- Cat ownership demographics -- Bird ownership demographics -- Horse ownership demographics -- Profiles of pet-owning households -- Profiles of pet-owning households -- Profiles of dog-owning households -- Profiles of cat-owning households -- Profiles of bird-owning households -- Profiles of horse-owning households -- Pet food and veterinary services for pets -- Pet care -- Pet food expenditures -- Dog veterinary services and expenditures -- Cat veterinary services and expenditures -- Bird veterinary services and expenditures -- Horse veterinary services and expenditures -- Other pet veterinary services and expenditures -- Veterinary medical profession -- Veterinary medicine -- American Veterinary Medical Association -- Nation -- State -- Gender -- Age -- Primary employment -- Veterinary Medical College -- Year of graduation.

(cont) Study methodology -- Survey -- Sample representativeness -- Statistical inference.