Former Vice President Joe Biden is using National Cat Day to gin up support for putting a pet back in the White House. The 2020 presidential candidate on Tuesday called on his Instagram followers to pitch in to his campaign, saying in a post that "it’s time we put a pet back in the White House." "Some Americans celebrate #NationalCatDay, some celebrate #NationalDogDay - President Trump celebrates neither. It says a lot," Biden wrote in a post. The message accompanied a photo of Biden and the German shepherd he and his wife, Jill Biden, adopted from the Delaware Humane Association...