Can I critically hit a chicken?
Solution 1:
You can indeed crit chickens. You can watch it happen with a few abilities, like the Barbarian's Overpower, with reduce their CD on a crit. The visual cue on the icon will tick down, even if you're just hitting a chicken.
For some reason, the chickens are coded so that they don't show that combat text. It seems to just be a funny irregularity.