Transcript for Four Injured in 2 Separate Bear Attacks in Idaho
Back in this country, a warning for all american, trying to enjoy the last weeks of summer at our national parks. The warning is about bear attacks. Four people have been injured in two separate grizzly attacks. The first attack came in yellowstone national park, where a group of four hikers were charged by a mother grizzly protecting her cub. They surprised a grizzly bear, that charged from about 40 feet out. The bear did make contact, biting his thigh and backsides. Knocked him down. Reporter: Two hikers were wounded before they could deploy their bear spray. The second attack came just 50 miles away. The victims, two habitat researchers in island park, idaho. The bears were startled or cornered. They reacted by charging. And then, taking a bite at an individual and then moving on fast. Reporter: In the second attack, a man was bitten on his hands. He was able to deploy his bear spray, stopping the attack. Bears are out, trying to find food, getting ready for the fall. So, it's important that as folks move through the back country, they make lots of noise and they carry bear spray. And this makes four attacks
This transcript has been automatically generated and may not be 100% accurate.