There lived a giant kangaroo,
It was unlike the ones we know.
Like we can watch in our zoo:
It weighed some 500 pounds,
And that unusual physique,
Made it impossible, they found,
To hop – what makes the kind unique.
So how did the giant move at all?
It must have walked, its legs were strong,
That made it tower, great and tall
What was the rush to speed along?...
What made this species learn to hop,
Once it developed a normal size?
Scientists can never stop
The answer to try to surmise...