. >>> this next dog demonstras pavlov's theory. that's all it took. >> was that the cookie jar? >> that is the cookie jar, or the treat jar. >> you use it to your advantage. that's the trick you use when car to go to the vet. >> the bone protector! >> what i'm going to do right now is a chance to gb this bone. let's see what happens. [ barking ] >> oh! [ barking ] >> ow! ow! [ growling ] >>> this is photographer ryan boots. he is taking his illuminated kayak, his drone and his camera world's largest river caves in laos. >> beautiful! >> i didn't know there were ill lum nated illuminated kayaks. how beautiful inside a cave with obstructions all around you and water. >> it's like a fantasy. somebody paddling down into o e center of the earth. it's pretty incredible. >> somee of the mineral formulations formations are 65 feet high. >> this is mother nature at her finest. >> it's like watching a tiler for a movie and all i know is i want to watch it. >>> what to do when you're at the liebrary. we're going in the library to shave andrew's head. why they're making a bald no, no, no, >