After actor Chris Evans, another Marvel superhero actor, Robert Downey Jr. has sent a personalised video message appreciating Bridger Walker, the six-year-old boy who saved his younger sister from a dog attack. The young boy's story has been making rounds on the Internet since July 9, after his aunt posted on Instagram how the boy had saved his sister from a dog attack and was horribly injured during the process.

According to The Hollywood Reporter, she shared the story on the photo-sharing platform on Sunday and posted few photos featuring the brother-sister duo as well as pictures of the injuries on Walker's face.