One of Brookfield Zoo's tiger cubs dies
Rare tiger cub dies at N.B. zoo after being born with health issues
The wild world of America's private zoos
Zoo Provides Foster Mom for Amur Tiger Cub - ZooBorns
Brookfield Zoo welcomes baby South American tapir calf
2-month-old Malayan tiger cub makes Cleveland home
Toronto Zoo Amur tiger cub dies
Lion dies from overheating at North Carolina sanctuary – New York Daily News
Nakili, a 33-year-old black rhino, has died: Brookfield Zoo
Tulsa Zoo - ZooBorns
Tulsa Zoo - ZooBorns
USDA issues critical review after tiger cubs' deaths, Washington County News