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.
Dog tremors while sleeping or awake are not uncommon. One of the major symptoms of dog tremors is panting. Other symptoms of dog tremors include shaking and shivering, weakness, body pain, loss of appetite, inability to cope with day-to-day routine, and loss of vitality and vigor.