To evolve a big mouth and big head

they grew puny forelegs instead.

T Rex dinosaurs

were top carnivores

with big jaws, so they got better fed!

Inspired by this Science Daily post:
https://www.sciencedaily.com/releases/2022/07/220707141832.htm

There once was a poor ballerina.
Her tutu might have been much cleaner.
But she munched on a biscuit,
a blunder to risk it,
a Tim-Tam, a small misdemeanour.

Your voice lit the world with song,
And honestly, we loved you.
Fame found you, raised you up,    
But changed you not, it's true...

And then your voice found a cause,
A purpose — lives to save.
A new Olivia we saw:
Undaunted, kind, and brave...

We hear your voice singing still,
Olivia Newton-John.
In Australian hearts you'll stay, 
The girl who's never gone.

An impressive, aggressive iguana
while eating his breakfast banana
slipped on the skin
went into a spin
and ended up flying to Ghana.