Im not seeing any regret in the dog. He did his job. He saw a badger following his owner and redirected the badger off his owner and onto him and escaped without harm. Good job, Fido. He earned his Alpo redirecting the badger from Mom.
Dogs are such bad asses. They are our close companions, and yet such capable predators.
Thats what I see too.
Dog protecting human.
Its what they do.