I am running a new character now in 3.17 , Kaumo and i'm in Kaumo territory, i decided to play safe and start with the fisherman path on the living in the wild simple course.
I ran into a pack of reindeers , half of them sleeping, so i tried to sneak (as my character had some nice sneak skill) and managed to get near (at 3 or 4 tiles distance i mean) of one reindeer (the other woke up and ran) still asleep.
I decided to throw my spear to test my luck and got the reindeer in the abdomen, he started to run but was bleeding around, making my tracking easier.
I followed the tracks and the blood pools until there was no more blood , only tracks, until i got lost (making noise too regularly to hope to get back a reindeer in visual range, looks like my high stealth skill is not high enough when there are too many trees around).
The annoyance is that i then lost my spear, but what i found odd is that the blood stopped after a few time.
So my question : are animals cauterising their abdominal open wounds (as the spear was certainly still in considering it was nowhere to be seen) that quickly in the game, the only other explanation would be that the wounded reindeer was running along another unharmed one and they separated at some point with me following the wrong one (but that's a supposition, as i saw no hint there were more than 1 reindeer in the direction i was following the track and blood)