In short, hunters don't like wolves.

BBC: Sweden wolf cull divides wilderness opinion

"In 1996 and again in late 1998, Alaskan voters made it clear that they don't want their wolves to be killed by same-day-air hunting, " Defenders of Wildlife President Rodger Schlickeisen said in a statement.

CNN: Alaskan airborne wolf hunting resurfaces

They worry if the man-eating wolves aren't killed soon, the problem could get worse.

CNN: Man-eating wolves terrorize Indian villages

"Wolves also have these genes but they don't use them as efficiently as dogs, " said Dr Axelsson.

BBC: Dog evolved 'on the waste dump'