When knocking it u need an owl to put them in the trap n just keep freezing it when it tries to inflate so then u can knock it easier bc I tried knocking a lvl 30 n it took like 60 tranqs when it said 7
They are believed to be part of the Tardigrada phylum, a group of extremophile microgranisims that can survive literally any environment, from extreme cold to extreme radiation, these guys are the hardiest of animals.
They have a damage resistance when inflated, so use a snow owl to freeze and deflate. After latest update, they can no longer be picked up or hit with bola. Heavily suggested to clear area of hostiles before KO. If timed right, you can keep gasbag in same area while tranqing by alternating freezing and shooting.