The "taming" or raising for the wyvern's is actually double of what the dododex says. I just saw this egg take roughly 5 hours to hatch. Not 2 hours. So be prepared for 4 days if your looking to imprint it a lot.
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.