Only one parent produces the young animal.

Planarians and flatworms can reproduce by dividing the body into two or more pieces.

Sponges and sea anemones are animals that belong to asexual reproduction.

Asexual reproduction and sexual reproduction are two groups of animals.

Two parents of opposite sexes are needed to produce the offspring.

Animals such as sharks, birds, reptiles and mammals mate when the male puts sperm into the female's body.

Animals such as sharks, birds, reptiles and mammals reproduce through asexual reproduction.

The fish lay eggs, then the male swims over the eggs and drops sperm on them.

It is the process in which the sperm unites with the egg.

The biggest animal in the world.

The blue whale can produce sounds up to 188 decibels, the loudest sound produced by a living animal.

Hummingbirds are the only animals able to fly backwards but they cannot walk.

A duck's quack does echo, and no one knows why.

The world's biggest bird can fly.

The Ostrich is the world's biggest bird and is 2.7 meters tall. Its eggs weigh over 1.5 kilos each.

It allows small birds into its mouth to clean between the crocodile's teeth.

Where do the male Darwin's frog keeps the female eggs?

What do the male Darwin's frog do when eggs matured into tiny frogs?

It lays 3,000 eggs in which one or two survive to lay the next generation of eggs.