You can fire from its back to tame pretty much any creature and it is remarkably easy to control when you are riding and weilding a weapon. Any dino that is too hard to hit while shooting from this thing's back can be picked up and put into a taming pen or frozen with resign thus making this the ultamate taming mount. If you get off of it and whistle for it to follow you it won't land and you can sit in its passenger seat. This allows it to regen stamina whist in the air. It is the only flyer you can do this with without anything to keep you in the air. There is a glitch that can occour that causes the player to exit tames in third person. This can happen when you land on any vertical surface whilst in third person. It can be reversed by landing on any vertical surface again but this time in first person. These guys have one weakness. If a megatherium kills just one other bug with the bug buff already active a wild level 12 can deal 826 damage while your level 66 rhynio will only deal 44.

RIP. Vjordic

Although you can't breed them you can still get the color mutations like any other tame. Trap a few rhynios and reuse them until you get the colors you want.