5. Toupee Dog

He's a Chihuahua who wears a toupee and a pink scarf. Sounds like a mixture of adorable and pathetic. But if that's your first impression of 'Toups' (as he likes to be known) you'd be well and truly wrong. Describing himself as "Twitter's biggest bastard", Toupee Dog is horrible. If he's not killing an innocent rodent, he's leaving his excrement in very inappropriate places. Every Monday, Toupee Dog embraces the canine world with his #MuttMonday hash-tag, whereby he tweets dog-related news stories and celebrates dog-kind. With language that you'd expect from the mouth of a muscle-bound thug, Toupee Dog really can be a horrible little swine. Follow him, but don't get too close - he'll have your hand off.
Example tweet: "If you're having squirrel problems I feel bad for you mutts, I've got 99 problems but I've still got my nuts" Toupee Dog can be found
here.