Can you spot the dog?

These incredible pictures were captured by Canadian photographer Andrew Knapp, who lives and works out of a VW camper van. They feature his pet dog hidden in an array of settings, from Fremont Street in Las Vegas to Grand Central Terminal in New York. Mr Knapp and Momo traveled to 25 U.S. states to capture the images, which are displayed in a new book, 'Find Momo: Coast To Coast'.