Little Thunder found a tiny egg on a native caper bush leaf. "What will hatch?"

"Let's watch," said Suzy.

Pop! Out wriggled a stripy caterpillar. It munched and munched and grew and grew.

"It's so hungry!" laughed Spike.

One morning, the caterpillar hung upside down and made a green case called a chrysalis.

"Is it sleeping?" asked Little Thunder.

"It's changing inside," said Suzy. "Wait and see."

Days later, the chrysalis cracked. Out came a caper white butterfly with white and black wings!

"Egg, caterpillar, chrysalis, butterfly," said Spike. "That's metamorphosis. It means a big change in shape."

Under a gum leaf, they found a ladybird doing the same thing. Egg, larva, pupa, then a spotty ladybird.

"Do I change shape too?" asked Little Thunder.

Canberra the cow smiled. "No. Calves, lambs and joeys just grow bigger. They already look like their mums."

"Even puggles?" asked Suzy. "Baby echidnas grow spines, but they stay echidna-shaped."

Little Thunder grinned. "So I'll just grow into a big bull. No wings needed!"