Fun fact. If u like these penguins and don’t want to kill them but u have to kill them for polimer I have a tip for u. If u r in ragnarok and u want polimer kill mantis. The give u 10 times more polimer and u won’t have problem killing them Because they r ugly
So I had a hard time getting organic polymer, one day I just happen to see these things and go” aaawww, your cut, now I want to kill you”. After that I got so much polymer after killing an entire Colony of them
If you dont have fur armor and want to tame/kill some of these, then just about everything can carry it, even pteranodons. So go to the arctic (with hide/cloth armor if you wanna reduce cold a little bit) with a pteranodon, then pick it up! Be mindful of direwolves and other dangerous creatures, though. To minimize the risk, go there with nothing in your inventory or hotbar, and just a pteranodon with a saddle. Then, you can pick them up and transport to your home/a warmer place. Good luck!
So I was in a dungeon remembering someone got a rainbow archaeopteryx then I remembered it was my little brothers pillow pets birthday then I killed one of the random penguins down there brought it up revived it tamed it and now I have what I think is a eerie penguin and a happy brother :)