I agree, any wounded animal deserves following up. I shot a buck one archery season early in the morning a few years ago. High and a bit back. I was sure I nicked the liver. The blood trail was spotty at best. I waited about 4 hours before starting to trail. I kept loosing the trail then finding it all day til dark.
The next day I recruitted my hunting buddy and we spent the next morning, me following the sparse trail and him walking the ridge. We found that deer after a total of about 8 or 9 hours of tracking through all kinds of brush.
It sure is nice to have dedicated hunting buddies that are willing to spend their time helping you find a wounded animal.