Easiest way to tame: make a dino pen, pick one up with an argy, put it in the dino pen then follow along with a basic taming process (knock it out, feed it). Make sure you have lots of narcotics on you!
Best thing about them: they can climb up really steep hills and they can potentially do lots of damage and can be fast.
Where to find: most commonly found on trees (they will be hanging upside down, high up on large trees) in the redwood forest areas (mainly on The Center) or I find lots of them in the Ragnorok desert.
On crystal isles I have crystal wyvern so I just go to desert pick him up and put him in my taming pen made out of stone gateways just make a circle from gateways build a ramp so you can shoot it and you can tame there any dino safely that can be picked up by flyer
Shoot it out of its tree, then pick with argie and drop it into a trap/hole. Cook up some mutton beforehand.
Bred a slick navy blue and silver mutation.
Many surfaces are considered 'vertical' for it to climb, including the southern side of Volcano on The Island, from which you can then pounce back into the redwood, which is the biggest leap I've found yet