The Denver Zoo did something that hasn't been done in North American history...and it got a little froggy.

The Zoo hatched around 200 Lake Titicaca frog tadpoles on Feb. 14.

They are the offspring of two of the 20 frogs that came in from Huachipa Zoo in Lima, Peru.

The rare South American frog is the world's largest entirely aquatic frog. While illegal in both countries, Peruvians and Bolivians harvest the amphibians to make shake-like drinks believed to give health benefits.

Before those frogs came to the Mile High City, it had been 20 years since a Lake Titicaca frog lived in the United States.

Denver Zoo is the only place in the Northern Hemisphere to house the critically endangered species.