In this film clip, the 5 things that let the audience know that Horton is having trouble are: 1. The image of Horton looking down the steep canyon and his ears are perked up which leads the audience to believe that Horton is nervous. 2. The bridge makes creaking and wobbling sounds which leads the viewer to believe the bridge is not safe for Horton to walk on. 3. Horton talks to himself with the reality of falling. He says, "This is a straight plummet to a certain death", "Yikes!", "Waaaaiiiiittttt!". 4. The music is scary as Horton tries to cross the bridge. 5. The image at the end of the clip show just how far Horton still has to go to get to the other side of the bridge...far!