Poisonous Bears
From BNSwiki
The sign!
Although they haven't made any actual appearances in any of the comics (yet), poisonous bears have been referred to on two occasions.
Firstly, in Comic 25, Beaver disagreed with Steve's statement that "bears are the most dangerous animal" and pointed at the sign showing the way to poisonous bears.
And then, in Comic 27, Steve became rather disappointed when he realised that the bear who had given Bear Victim Guy a mauling was not poisonous at all.
