You need to know animals that lay large eggs 

Ostrich

The largest bird, their eggs can be about 6 inches long.

Emu

their eggs are around 5 inches in length.

Kiwi

kiwis lay relatively large eggs, about 3 inches long.

Cassowary

Their eggs are about 3 inches in size as well.

Crocodile

They lay large eggs, measure around 4 to 5 inches.

Komodo Dragon

Lay eggs that are roughly 3 inches in size.

Penguin

Penguin eggs are still relatively large, around 2 to 3 inches.

Turtle

Turtle eggs they can be around 1 to 2 inches.