While pet owners across the U.S. planned for holiday travel last fall, many were hit with a fear for their four-legged friends as multiple states reported increased cases of dog respiratory illness.

With rising air pollution levels in urban areas, these breeds face heightened risks, including breathing difficulties and long-term respiratory conditions.

BALTIMORE - The Baltimore Animal Rescue and Care Shelter (BARCS) is temporarily halting dog intakes because of a "significant uptick" of a respiratory virus, according to the animal shelter.