 Keep breathing. We've got you. Don't let your world go up in smoke. Have working smoke alarms and keep children three feet away from anything that gets hot. Learn more at usfa.fema.gov because fire is everyone's fight. Hi, everybody. I'm Jack Hanna. Since I was a boy, I've been fascinated with animals, especially their tireless work ethic. Just look at birds who gather supplies to build nests or penguins who travel up to 500 miles to secure food for their families.