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.
Outside of separation anxiety alone, dogs also whine out of general nervousness and uncertainty. If you just brought your pet to the doggie groomer to get his fur cut, don't be surprised if your little one can't stop whining while you're waiting.