Usually, koalas move slowly, using their energy very efficiently. Normally, these animals spend 20 hours a day sleeping! The platypus is an egg-laying mammal, closely related to the echidna. These are the only mammals that lay eggs.Jan 28, 2015
Starfish & Their Babies. There are 2,000 species of starfish, also known as sea stars or Asteroidea, living in the world's oceans. Though these invertebrates have no brains or blood, they're more than capable of reproducing; females can even spawn up to 65 million eggs at once.
A. Each cocoon holds from one to twenty fertilized ova or eggs-depending on the species and also nutrition of the adults laying them and environmental conditions like soil moisture. Usually only a few to several young worms successfully emerge from each cocoon.
A nest of eggs is called a clutch, and with the exception of emperor and king penguins, clutches usually contain two eggs. (Emperor and king penguins lay a single egg.) A clutch with more than one egg presents a better chance of at least one chick surviving.
The ones with pups that grow inside the mother have fewer babies at a time than sharks that lay eggs outside the body. Sharks do not care for their babies after they are born, but they do search for a safe place where they can lay their eggs or give birth.