The rat emoji present on the Twemoji 1.0 SVG and onward is the only rat 🐀emoji with a chipped ear. This implies the twitter rat has been in some kind of violent altercation.
In spite of the harmful dynamics that they were forced to participate in, I believe, with patience and thoughtfulness, that we can rehabilitate tweggbug.
EDIT: This is now a secret hideout for villains.