Why Dog Weighing 165 Pounds Travels in First Class

(INSIDE EDITION) - A portly St. Bernard mix named Hank the Tank travels better than most airline passengers. But getting Hank the Tank to his flight, is no easy task.

He weighs a whopping 165 pounds due to a thyroid condition. His owner, Kari Whitman takes her dog along nearly every time she flies. Because he's too overweight to walk, she pushes him on a dolly.

Hank is actually a service dog and senses when his owner is about to have a migraine or seizure alerting her to take her medicine.