You think vacuum cleaners freak out dogs? You ain't seen nuthin'.

Stella is a pit bull who is absolutely petrified of a pineapple. She barks at the fruit like she's trying to get it to back to Hawaii.

To be fair, pineapples look kind of dangerous, don't they? They got those prickly things on them and have a voluptuous shape. Stella has every right to be concerned.