Pics
Are of a deer's hoof.
The wire ties are to force it into a 90 degree angle so as to create a sort of hook that the person can mount it to a board or a wall.
Usually, hunters will do this to two hooves so as to make a gun rack of sorts.
The person probably had this outdoors to age and allow a natural decomposition of the muscle tissue which is a smelly process.
A raccoon, skunk, opossum or other scavenger probably smelled the decomposing tissue and dragged it off.
Then it probably got scared off from another scavenger or maybe a dog and left it where he dropped it.
Just my $.02