Spit the sniffer llama (AVI-M4)

A police officer is walking through the neighborhood. He's holding a large dog. The dog is pulling on the leash and barking. That officer must be looking for a criminal, Finn thinks. "I want to do that too," Finn says. "I want to teach Spit to be a sniffer dog." "You mean a sniffer llama," says Dad. Will Finn be able to get his llama to sniff? And what will Spit find then?