This damned upright walk can't be this difficult!

"What daffy giant chumps! Just die out!"

"Everyone can die out! But who can claim he's a symbol for extinction!"

"See, boys, I am a winner either way:

I invested in a hedgefond which is betting on our extinction!"

Because of the climate change 

there's an increase of thunderstorms in Africa

The last of the pandas:

"Damn, no one makes TV anymore!"

"Good news, guys: Anteaters are extinct! - Hello? - 

Where is everybody? - Helohooh!"

Winners of species extinction:

The new "Big Five" of the Serengeti

Great! Since the sea has risen you can even take city trips!

Okay, we outlived everybody else. 
But whose junk are we gonna eat now?

You claim to be an endangered species? Very funny!

Who is going to die out first: chicken or egg?

"I wish you damned lions die out finally!"

I am ashamed to be unflexible

extinct animals - blame yourself!