Wild animals heal too.
I had an elusive glutton in the area that got hit by arrow, ran off into spruce mire. If I didn’t check light lever traps and loop snares every day after the 1st, I’d find bones and pile of feathers by triggered traps. Ran into the glutton later, it had healed, yet carried an arrow. Missed the shot, it ran off again. This happened couple times, hit or miss; then it hid in the spruce mire. Until 2nd winter, spotted it on pine mire 300m away from closest spruce mires, hit it again, twice. Skied up to it and finished him/her off. It had 7 arrows on the carcass.