It is, it is interesting to see the difference in reactions though. In my herd which was 8 horses at the time of the first death, only 1 horse reacted to the missing one, the others didn't even seem to notice he was gone. That one died in the barn where the others couldn't see or smell the body, but Thunder was pacing the fence line and obviously upset, I caught him, took him in, he looked in the stall where Doodle was laying and just dropped his head and turned to go back outside with the others. Thunder was the other one to have to be put down, and Wings was looking for him, I took him over to where he was and almost got flattened a few times because Wings was up on his toes spooking really bad the entire way over there and just about ran me over, he never did sniff the body, but I got him to about 5 feet away and he relaxed a little bit and walked back to the field like he had a brain (not spooking but not relaxed either).