I FOUND IT...

... in a cellar building off St John Street in Farringdon, London. I don't know what the hell it is though.

It was alive when I found it, but I tried to squeeze it and I think something popped because it turned around at me and think it was

Quite a frog
Pronunciation Key

SKWOG
Here is Another View
Human or Walnut?
Brian Dennehy to play Spiderman