Hiker mauled by bear in Madison Valley shares grizzly tale on social media.

A man who survived two consecutive bear attacks while hiking in the United States has shared the grizzly tale on social media.

Todd Orr was attacked twice by a bear while walking in Madison Valley in southwest Montana on Saturday (local time).

“I’ve just had a grizzly, with two cubs, come at me from about 80 yards,” Mr Orr said in a video posted to Facebook shortly after the attack.

Despite using bear spray, the animal repeatedly bit Mr Orr, puncturing his head, ear, arm and shoulder.

Warning: This story contains graphic images that some readers may find distressing.

Bloody-faced and breathless, Mr Orr described the force of the animal’s bite as “like a sledgehammer”.

“[I] think my arms broke, but legs are good, internal organs are good, eyes are good,” he said.

“The force of each bite was like a sledgehammer with teeth.

“She would stop for a few seconds and then bite again. Over and over.

“After a couple minutes, but what seemed an eternity, she disappeared.”

Still in shock, Mr Orr said he headed back down the trail to his truck, 4 kilometres below.

He said he did not stop to dress his wounds, in fear the bear would return.

But the grizzly did return and set upon him for a second time.

“She was instantly on me again. I couldn’t believe this was happening a second time,” he said.

“Why me? I was so lucky the first attack, but now I questioned if I would survive the second.

“Another couple bites to my head and a gash opened above my ear, nearly scalping me.

“The blood gushed over my face and into my eyes. I didn’t move. I thought this was the end, she would eventually hit an artery in my neck and I would bleed out in the trail.”

Miraculously, Mr Orr survived the second attack, managing to get back to his car before calling emergency services.

“Not my best day, but I’m alive,” he said.