The zoo originated from Larry Seibel's long experience in breeding exotic animals, and was opened in 1998.

Its name derives from the area of North Carolina in which the zoo was located, which is called "the Triangle" because it comprises the three larger cities of Raleigh, Durham, and Chapel Hill.

[6] Seibel closed the zoo in February 2006, citing money and personal problems, as well as encroaching development that would require him to fence the entire property.

[4][5] Mammals at the zoo included a Bengal tiger, blackbuck, Himalayan moon bears, camels, capybara, caracals, coati, donkeys, fallow deer, red kangaroos, lemurs, lions, llama, scimitar oryx, muntjac, sloths, servals, and zebras.

Reptiles at the zoo included leopard geckos, bearded dragons, and various species of skinks and snakes.