Seeing (apparently) no sign of the cat? Berkins will slowly and carefully move towards the commotion in front of the end, being careful to avoid excited crowd members, lest one of them bump him and do a hitpoint worth of damage.
Acrobatics?
Rolling 1d20+1:
(11)+1: Total = 12
And then begins trying to see what's going on with the obviously trustworthy miracle healers outside. He is relieved to see they are rat people as they will be the obvious first choice for any rogue felines. (not feline rogues, who would go for someone else in the interest of being sneaky. If they existed, which they don't because there's no such thing as a rogue yet.)
Determine the truthfulness of the skaven
Rolling 1d20:
(9): Total = 9