I found a pink baby sheep from my world today, very close to my base actually. I was just mapping my first map and saw it. Unfortunately, it grew instantly before my eyes as I looked at it. I was going to take a picture/screenshot of it to show it to my brother but I was too late. That really hurt. It's not THAT rare to find pink sheep to be honest. Especially when mapping and flying with elytra. But I actually had no idea that baby pink sheep even existed...