Other recent incidents include:
Alaska: Hunter mauled
A hunter mauled by a bear in Alaska survived 36 hours in the remote wilderness before rescuers found him using night-vision goggles, the Alaska National Guard said Saturday.
The man, who was part of a guided hunting party, was attacked about 35 miles north of Anaktuvuk Pass. Helicopter rescue teams tried to reach the man several times but had to turn back due to dense fog and weather, the Guard said.
The hunter suffered significant blood loss but was stabilized by a medical professional who happened to be in another hunting group, the Guard said.
"The pararescuemen credit him for saving the man's life. He provided expert care with limited resource for several hours, ultimately stabilizing, warming and rehydrating the victim," Air Force Master Sgt. Armando Soria said.
Around 3 a.m. Saturday, a helicopter managed to land at the scene, with crews using night-vision goggles to aid in the operation, the Alaska National Guard said.
The man was in stable condition.
Colorado: Camper bitten
A bear clawed its way into a tent and bit a sleeping camper on her arm Thursday night, CNN affiliate KCNC reported.
The woman suffered puncture wounds but was not seriously injured. She called for help, and the bear ran away, KCNC said.
Wyoming: Hikers attacked
Two hikers at Yellowstone National Park were injured Thursday after the encountered a female grizzly bear and a cub. The sow charged the hikers, leaving claw and bite marks on one, park officials said.
The sow and cub left after the hikers sprayed their cans of bear spray.
"Yellowstone bear biologists say the sow's behavior is consistent with purely defensive actions taken after a surprise encounter with people," the park said in a statement. "This was the first report of any bear-caused human injuries in Yellowstone this year."
The park requires visitors to stay 100 yards away from black and grizzly bears and advises hikers to walk in crowds and make noise while on the trail.
Idaho: Researchers assaulted
Two habitat technicians collecting data in Shotgun Valley, Idaho, were injured Thursday when a grizzly bear charged, the Jackson Hole Daily reported.
The bear knocked both men to the ground, biting one researcher on the thigh and backside and the other researcher on the hands, the Daily said.
One of the men used his bear spray, and the grizzly fled the scene.