HartsfieldâJackson Atlanta International Airport has been the world's busiest airport every year since 2000; with all airports combined London has the world's busiest city airport system by passenger count.
Tension or Temperature. Dogs may shake as a way of relieving tension. If a dog is feeling nervous or uncomfortable in a situation, it might shake the whole body as a way of shaking out tension. This behavior also may function as a means of getting attention from other dogs or people.
Dogs often shake if their skin is irritated or itchy. Unlike humans, dogs cannot always reach to scratch any itchy or ticklish areas of their bodies. A dachshund, for example, cannot reach any area along its long back with a paw. So, you might see a dog shaking from side to side as a way of trying to stop itchiness.