>>117415805He can do that. He also transformed into intelligent aliens, dragons,phoenixes, chimeras, monkey gods, godzilla and eldritch abominations before, so if anything it would be quite easier than what he has already done. He doesn't do it because writers either dont realize his powers, or realize he is retardly OP (easily top tier titan alongside raven and wally) and dont want to break their story, which basically the same problem flashes have. Only limitations he really has is that changing a lot of mass is tiring, he only adquires the natural abilities of something, he needs to have a clear idea of he changes into, and what he changes into influences his personality (so lovecratian abominations can make him or are a sign he is insane).
>>117416318It depends on the adaptation. The above applies to the comics, and I guess the teen titans cartoon, but the DCAMU seemed to restrict him to the fauna of the planet he is in, Young justice severely limited the speed he can transform, restricted him to actual animals and doesnt allow him to combine powers of several different animals at once.
>>117416101His powers were never based on magic, you're confusing him with animal man. He has always been a result from scientific research, hell he existed way before the red or the green were a thing.
>>117417860He is potentially immortal, since there is a real life species capable of reversing aging,
https://en.wikipedia.org/wiki/Turritopsis_dohrnii 
