To encourage baby Toothless to hatch, rock his egg back and forth to hear him growl; tap to hear him tap back; and shake and tilt the egg to get him aggravated  once he's agitated enough, he'll be ready to hatch! Outside of his egg, Toothless is ready for fun and adventure.

Have a bucket ready, you may have to put out the fire before it spreads, and the dragon could be killed by the fire. By default eggs take 7200 ticks (6 minutes) to hatch, this can be changed in the mod's configs.