I have a Yorkshire Terrier. Yorkies compensate for their lack of growth with their boundless trust and affection for their owner. They expect a lot of attention, but they also give it back tenfold. Yorkshires are easy to travel with. If people need emotional support when they travel, this breed is a good option. And the fact that they are adaptable to change will be another bonus. I even found Service Dog Leash where I bought him various accessories so we could walk and travel comfortably.