By Sheetal Kumari | November 01, 2025

10 Animals that Lay World’s Most Massive Eggs

Ostrich

It lays the world’s largest egg, weighing about 1.5 kg and measuring up to 15 cm in length — truly a giant among birds.

Image: Canva

Emu

Emus lay striking dark green or blue-green eggs, reaching up to 15 cm in length and admired for their vibrant colour and beauty.

Image: Canva

King Penguin

King penguins lay just one large egg each season; they carefully balance the egg on their feet under a warm fold of skin to protect it from the cold.

Image: Canva

Southern Cassowary

The large, bright green eggs of southern cassowaries, resembling polished stones, are laid in carefully concealed dense forest nests to keep them in safety.

Image: Canva

 Leatherback Sea Turtle

Leatherback sea turtles deposit dozens of eggs, each the size of a table tennis ball, into sandy nests along tropical beaches at night.

Image: Canva

 Green Sea Turtle

Each green sea turtle buries a large clutch of round, soft-shelled eggs on a warm beach and then returns to the ocean under moonlight. 

Image: Canva

Chinese Giant Salamander

The Chinese giant salamander lays the world’s largest amphibian eggs, which are hidden away in burrows under water, guarded by the male. 

Image: Canva

Saltwater Crocodile

Saltwater crocodiles lay the largest reptile eggs in sandy mounds and then guard the nests ferociously until the hatchlings emerge. 

Image: Canva

Platypus

The platypus is an uncommon egg-laying mammal that lays two soft-shelled eggs, quite large considering its small, semi-aquatic body. 

Image: Canva

 Pacific White Skate 

The Pacific white skate lays long, rectangular egg cases called mermaid’s purses, to about 30 cm in length.

Image: MBARI

Next: Meet the Valais Blacknose: Cutest Sheep Breed in the World
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