Yup, looks like he's been touched by the Cattle Dog fairy. They can be a real handful- especially if he's been abused (and for a cattle dog, abandonment is big time abuse).
I've had blue heelers now for along time. Not really wanting another. I've got one left, the other finally got kicked by a horse and killed her on the spot. Yes they are a handful and altho I love the ones I have/had I don't really want anymore.
Becky