or
Catford. Obvs.
Catford. That cat is hard as nails. I bet that tiger is a de-clawed palace pet.
Developers want to take the Catford Cat down. I wouldn’t want to be in that fight.
Okay round two.
Catford Cat versus Horniman Walrus:

Walrus all day
Defo the walrus 
Pfft. Walrus.
Next.
Walrus. Fat People Rule.
Thanks for all the useful feedback.
Round three - Mammals verses lizards
Five go into the ring - how many come out?
(Not allowed to use giant asteroids)
These lizards are over 100 years old. So lizards natch.
I reckon it’s still got to be the walrus - iit would just flatten these guys Big Daddy style 
That lizard has a walking stick, no fair!
He needs to be arrested for carrying that weapon - so the walrus just needs to flatten 4 now of the 5 reptiles at CP 

I reckon the Walrus would just think, “Sod this for a lark!” and go on a chummy craft beer safari with the Crystal Palace Megatherium, leaving the cats and reptiles to it.
I know it is getting complicated, but I just wanted to mention there is now an elephant in the ring!
Better than an elephant in the room. Anyways that elephant is due for demolition so might be feeling a bit scrappy.
That is the exact view from my window right now.
Except for the rain. And the little white bubble hut.