Use a snow owl to deflate the gasbags and keep them from flying away and you heal them so you wont kill them with tranqs.

They spawn in lunar caves on genesis and the wasteland on extinction

Who thinks the bottom of this looks like a cow?

5 MINUTE GASBAGS TAMING

1. Get 3 wood dino gates and 2 gate doors
2.use a snow owl to freeze da gasbags
3.build the gates and put a door on each side
4. Knockout gasbags and feed mejo berries
5.BAM. tamed gasbags.

Use 6 or more stone dino gates like you would on argy (after update) to trap- with 2 doors on the end, then pump full of tranq darts.

How I knocked out a high level one in single player is I used my looked around the waste land with my poison wyvern level 120 (bean cosumer) . Found a highnlevel one grabbed it with the wyvern (press c on pc while flying)took it home. I put it in this small stone house and traped it in there got my level 225 equius in there and knocked it out after a while. If its trapped you can use any level of torpor inflicting creature as long as it won't kill it . By far the fastest way to knock is a high Melee basilisk which you don't even need to trap the gasbags with. But I don't most people have one of those as they take fertilized rock drake eggs to tame and I am still having trouble stealing one of those.

Fun fact:
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.

Shoot it once, then freeze with snow owl. Since you healded it, all is forgiven it wont attack you....so shoot it again.....rinse and repeat. When you freeze it deflates so max dmg/torpor...better then when its trapped and always bloated

When you are carrying a gasbag with a quetzal it takes wayyyyy more tranq darts then dodo dex says. It took around 110 darts for a lol 145. Was worth it but good thing i brough extra gear.