One morning in 2010, a pest inspector came to a home in Brooklyn, New York, to search for bedbugs. However, the inspector wasn't a person--he was a dog named Cruiser This puggle (a cross between a pug and a beagle) was able to sniff out the bedbugs in the family's home so that they wouldn't get bitten by the blood-sucking insects. Cruiser is one of about 150 dogs that have been trained to detect pests. Some dogs specialize in finding bedbugs, while...