Zoo

A zoological garden or zoo for short, is an establishment that keeps animals on display for entertainment and scientific purposes. Several zoos were known to exist on different planets.

The Lactrans kept humans, Canopus III dinosaurs, as well as other creatures when Spock and the crew of the USS Enterprise was to save the crew of an abandoned ship. 

Bishop Numida kept Klingon and Romulan, among others, as prisoners in a zoo on Apailana V. They were saved through extraordinary recklessness from Federation and Klingon redshirts.