In Hawaii, Bill meets two dogs who protect birds. Then, he visits three snake-sniffing dogs. 

Bill meets a dog who rescues people in avalanches. Then, he visits six luggage-sniffing beagles. 

Bill meets a dog who stars in movies. Then, he visits a group of hounds and horses on the hunt. 

Bill meets dogs who find lost pets. Then, he visits a truffle-hunting dog.

Bill meets a troupe of performing stunt dogs. Then, he visits a team of water rescue dogs.

Bill hits the beach to meet a surfing Corgi. Then, he visits dogs whose noses help bees survive.

Bill meets dogs who rescue people in disasters. Then, he visits a dog who is the Mayor of his town.

Bill is at Texas A&M to meet their mascot. Then, he's in New York to meet a guide dog for a runner.

Bill meets a dog whose friend is a Cheetah. Then, he meets a helpful companion dog.

Bill is at sea with a dog who sniffs for whale poop. Then, he meets a dog keeping a sheep ranch moving.