who took down a White House intruder; Cairo, a member of the U.S. Navy’s SEAL Team Six, who participated in the raid on Osama bin Laden; and Rex, a bomb detection dog who worked in Iraq.

National K-9 Veterans Day is an annual March 13 celebration of "canine courage," and the bravery of military and police dogs.

K-9 Hurricane, a 15-year-old Belgian Malinois who helped protect the White House and was the most decorated dog in U.S. history, has died. Christina Roof, of K9s of Valor, confirmed Hurricane’s ...