HOUSTON, Texas -- The oldest animal at the Houston Zoo is also its newest father. At 90 years old, an endangered radiated tortoise named Mr. Pickles and his mate Mrs. Pickles welcomed three new little ...

Mr. Pickles is quite special. For starters, this radiated tortoise is considered “the most genetically valuable radiated tortoise in the Association of Zoos and Aquariums’ (AZA) Species Survival Plan.

It's significant, according to officials with the Houston Zoo, because the radiated tortoise is a critically endangered species whose numbers are... Nobody ever said turtles worked quickly. Though it ...