Dogs do that.
My dog of several years ago tackled a bear in Yellowstone park that was trying to steal her bones from supper. Chased it down the road. It would turn every once in a while and try to take a swipe at her. She would just dance out of the way then continue to nip at its heels.
Her name was “Trixie” and she weighed maybe 15 pounds. She was a Dachshund/Smooth Haired Terrier and Chihuahua mix. I believe that pound-for-pound Chihuahua’s are fiercest breed around.
Bob Durtschi