Find lots between the volcano and redwood biomes on the island... Picked up a pretty cool black and gold level 94 today just run up with bola hit it then traq with darts for lowest kill chance and make sure to keep all carnivores away from it... Or else it probably won't belong to you anymore
If your server is a well populated good luck finding a higher lvl. We usually run about 45+ players so the only time you can really tame anything is early in the morning. So finding these are next to impossible.