Little Oliver from Kansas City dreams of being a policeman and decided to train his dog Ruby up as a K-9.

In this fun, heartwarming video, Oliver goes through a series of rigorous steps that Ruby needs to follow. These include: stay sitting when her favourite toy is thrown, which she fails; and not give any kisses to anyone outside, which she also flunked.

“Ruby, you may be the worst police dog ever, but you’re my best friend,” says Oliver after the training day.