How Many Types Of Animals Are There?

How many kinds of animals exist on Earth?

So, so, so many life is so diverse

And we discover more all the time, scientists try to keep track

And while we know it's in the millions, we can't quite be exact

Though it's impossible to list them all

Scientists made a system called taxonomy

Which classifies all animals into groups

Now, this system divides them into two basic kinds

You got the vertebrates, the animals with backbones

You know, spines

And then the invertebrates who also share a common trait

The lack of a backbone which they don't seem to mind

Now, for vertebrates it's been decided

It makes most sense that they're divided

Into mammals, fish, amphibians, reptiles and birds

Invertebrates have different groups

And within them there's so many cute and charming guys

Like butterflies and wiggly little worms

How many kinds of animals exist on Earth?

So, so, so many life is so diverse

And we discover more all the time, scientists try to keep track

And while we know it's in the

millions, between one and tens of millions

We just can't be exact