Spit the detective llama (AVI-M4)

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