The predator just killed the guy,and he probably thought "Well he ran faster then i expected,and i have a few minutes.....". And it does'nt take long to skin something,if you do it right then it will only take a few minutes.And have any of you ever heard of recon?.You go in,eccess the situation you go into the sewers .you see how far its spread."Oh hey,im a predator,whats that?.Aliens on earh?.Guess i better nuke em!.(3 years later).Ah shucks!.Its over-run with aliens hee-yuk!.".Wolf grabbed the ooze off the dead pred and used it for lots of stuff at first,then saw how far they had spread,and started using it on bigger stuff,then in the hospital he thought "Well,theres no point in using this,theres just too much!".And crammed the vial down the aliens throwt.And konradski,he did'nt kill those humans he liquified,so there would be no honor in taking a trophy.In my AVP omnibus Top-knot took most of the armor and left a predator to die on a planet because he took a trophy that was'nt his to take.And the xenomorphs are very dangerous bio-weapons,would you put your own species at risk to some short,pale wimpy humans?.No,youd destroy as much evidence as possible.You people are still thinking human.You need to start thinking cold-blooded killer with highly trained skills and a twisted sense of honor.Sorry you did'nt like the movie Deco.