Luna, a super brave German Shepherd, saved her owner, Vanessa, from scary bears while they were out running.
The bears were mean, and one big bear even tried to hurt Vanessa, but Luna barked really loud and scared the bear away.
Vanessa got some boo-boos and had to go to the hospital for a while, but she's okay now.
The people who take care of the animals had to let one of the bears go to sleep because it was being mean.
