Welcome to Wublin Island! This realm is unlike any before it... and likely any to follow!
Once breeding is complete, you can choose to zap a monster egg into a Wublin statue to give it the spark of life and wake it up! Check a Wublin's inventory to see which eggs it needs, but act fast - unless all the necessary eggs are collected and zapped within the time allotted, the eggs will go bad and you'll need to start the process again. Good luck, and have fun waking up the Wublins!