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.
It uses sound waves to create an image of your dog's womb. The vet may give your dog a blood test to check her hormone levels. Dogs have higher levels of a hormone called relaxin when they're pregnant. If you don't take your dog to the vet until her 4th week of pregnancy, the doctor can feel your dog's belly to confirm puppies are on the way. This method can only be used between the 28th and 35th days of pregnancy, and it should be done by someone who is trained.