The eggs are laid unfertilized. They’re wet and soft-shelled, about the size of a grapefruit and slightly bean shaped. If they’re fertilized within a week, the shell hardens. They hatch in about a year. Unfertilized, they dry out in about a month.
The horror stories of goblindom often involve female goblins watching their eggs dry out and die.
Dread, warlord of Celephias, broke open eggs and killed developing ‘wetlings’ after the siege of Bloodharvest. This horror has no meaningful equivalent in goblin history. Thousands of goblins died at Bloodharvest, and tens of thousands of eggs, for it was one of the great nurseries and hatcheries of ancient Whitehall. Those were colocated with their governments. Dread destroyed them all.