A friend works on / volunteers on a ranch along the next river corridor to the west. They have found several deer skeletons, meat removed, just tendons, bones, and hide, with the rear leg broken and the neck snapped inside of an open-air barn. This is consistent with observations from other places.
Thoughts? Well, you did ask. I think it is useless so far as providing evidence for existence. There are far too many alternate explanations for it to be convincing to anyone. Deer break their legs either stepping in holes, being hit by cars, and so on. As tendons dry, they can bend the neck or other joints in ways consistent with deliberate manipulation. What my friend found, the photos you shared, are interesting information for people who've already decided for themselves that bigfoot is, or is most probably, real, but so far as moving anyone from non-believer to believer .. nah, not going to move that needle in the slightest.
I wish to thank you for sharing, don't want you to regret that based on my seemingly negative comments. I find it interesting .. but I'm not someone who needs convincing.
MIB