National K-9 Veterans Day is an annual March 13 celebration of "canine courage," and the bravery of military and police dogs. "Serving on the front lines, in combat zones, and at our borders, these fearless four-legged fighters are an invaluable part of protecting America," Trump said in a Thursday message to commemorate the day.

National K9 Veterans Day recognizes the heroic contributions of dogs that have served in the military, law enforcement, and search and rescue.