Columbus Zoo:
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Gorillas: First Captive Born, First Second Generation Male and Female, First Third Generation Female, First Set of Twins in Western Hemisphere, Oldest Gorilla in Captivity as of Now
Bonobos: Only set of twins on record (one=DNS).
Cheetahs: Best Breeding Record for a US Zoo
Mexican Wolves: One of the Best Breeding Records for a Zoo
Manatees: First zoo outside Florida to house West Indian Manatees, Farthest North
Reptiles: First to Breed Jamaican Boa, Largest Asian Terrapin Collection and Best Breeding Record
Tiger Quoll: Only zoo in the world to house one as of now.
Koalas: First US zoo to permanently house them