I was sitting at my treehouse at the lake in the redwoods and I saw a spino spawn, I was worried that it would kill the poor otter in the pond. It killed a fish and then hit one of these 5 of them came out of no where and killed it. I had tamed one once and I thought it was weak but I guess i'm wrong now.
I have a pack of 10+ high level dimorphs that eat brontos and rexes before their corpses can hit the ground, I have them follow me on my argy and when people see the cloud of sky piranhas behind me they give me wide berth as they attack riders directly. If you have a base with a large closed room have these guys follow 1 dino that is passive but set all the dimorphodon on aggressive, no one will want to go into that room.