sensitive to temperature and water quality -- >> beautiful. >> these creatures are starting to disappear. we have 6,000 amphibious species, we will lose 3,000 in the next few decades. hopefully when kids read these books they'll be inspired. i have one more thing to show you. >> okay, really quick. >> okay. open this and take this out. i trust you. >> yeah, good. what is it? >> i can tell you spend a lot of time in the kitchen. >> i do. >> opening tupperware. >> my nails. epic fail out in the field. >> this is your classic american frog so gabe and lucy in brooklyn eventually in book number eight they're heading to the amazon and they see this guy's older cousin. >> whoa! wow. >> how is that? >> this is brooklyn and that's the amazon. >> you probably would see this at 1:30 in the morning on broadway. an amazing creature. this, again, shows the beauty and importance of amphibians. this protects itself with these poison glands. >> wow.