Only peripherally heard of that series, but sounded like a good one! Hee… and that sounded so cute. But, er, to be fair as well, if they were in America, it very well could have been an alligator. Members of the same family 'Crocodylia' as crocodiles (and minor differences in the jaw/head shape), but more common here, where I think other countries that have them tend to have crocodiles.
This sounds similar to 'Planet Earth' series, both of which I've heard praised a lot… similar, yet different in their focus?