Are you positive it’s an animal bone? Considering the fact you think the bone has been cut, & the fact there’s been more than a few human feet found floating in BC waters the last couple years, I’d be reporting the bone to the police if you have any suspicion it might be human.
If this bone had shown up in my neighbour’s yard, I’d have concluded that a raven stole the bone from my dog and deposited it next door. We’ve seen this happen. Usually dinner-thieves eat their spoils nearby. (Within sight of our dog, who is furious about this.)
But in the middle of the woods, far from houses? That’s the part that gets me.