Visual Cues in Animation

I was looking at a scene from Wallace and Gromit: The Wrong Trousers, where Feathers McGraw is controlling Wallace as he goes through a museum. During the animated film, I thought; why did the penguin move around like a normal person and why no one else seem to notice? There was an exhibit featuring tribal penguins.This could suggest that in this universe, penguins developed in a similar way to humans. I found this to be an effective example of a visual cue that conveyed an idea. The foreground was blurred so that the focus was still on Wallace.

Wallace in Museum Vido Clip