Hunting

Hi all, I hope this community is not dead or the wrong place

I was watching Alone Season 7 Episode 6 on Netflix. The screenshot was taken roughly 40 mins in. One of the key moments is the contester shown in the picture killing a Musk Ox using bow and arrow. Later, when he hauls back his gain, I cannot help but notice there seems to be a plastic tag attached to this Ox leg. It very much looks like something they would use in a commercial butchery to keep track of their products.

Online I could find a lot of controversy about how the kill was made. People think how the show is cut, it leaves out key information or overplays some struggles. But the overall opinion seems that Alone is one of the only shows where competitors are truly on their own. I did not find a single discussion about that yellow plastic looking tag. What is this? And why is it on a leg of an animal supposedly killed in the wilds by a guy surviving on his own?