Steven Rinella is an extreme outdoorsman who writes about it.
In his new book, American Buffalo: In Search Of A Lost Icon, he describes hunting buffalo in Alaska after winning a lottery.
Rinella says his obsession with the animal began in Montana in 1999 when he unearthed a bull's skull.
"When I found this thing, I didn't know what it meant — but I knew it meant a lot to me," he says. "And out of that emerged sort of an insatiable interest in the animal."