When feeding recently hatched wyvern babies, make sure you make a trap with behemoth gates and an easy key lock so you can knock out the females for milk. Store a fridge near them to preserve the milk and be ready to sit there for a while on official servers.
I got a level 150 lightning egg and I was so excited to hatch the egg...that when I went to put the egg down I accidentally ate it instead. :( ps4 users: R2 ISN'T GONNA DROP THE EGG YOU'RE GONNA EAT IT LIKE ANY OTHER EGG. REMEMBER THIS. LOGIC BEFORE EXCITMENT.