Wyverns do not get their attention and you can pick them up I haven't tried it but I thought about it just picking them up on the center and taking them to a spot where a lot of herbivores are therefore you won't just die because I lost several because of Rex's and carnos, but here's my story about how I had a epic encounter I guess I found one of these enlarged flaming cats it was a 145 I was riding around on it trying to tame it and I got the attention of two more it died but immediately I lured another one into the water got on its back and went around taming eventually it died and I got onto another one and successfully tamed it keep in mind I spent a good 15 minutes on each of them barely scratching their health and managing to toggle everything there was so much going on I don't know how I kept on getting on another one I didn't look at level I just saw one grabbed it and then went on by far one of the most chaotic moments in my entire history of playing this game, but overall these giant inflamed house cats are really good they could be a pain because if you simply fly over them they will lock on to you like a homing missile and will kill you if you're not careful bring really good armor and a decent crossbow is how I managed to get one of these and don't be afraid to give it a hug just make sure you have really good armor or you're not going to last too long