Han Solo & Carly Rae on Instagram: "The smartest dog breed in the world, the Australian Cattle Dog! Also known as Blue Heelers, Red Heelers and Queensland Heelers… many names for one super intelligent breed! What breed do you think is the smartest? (Of course this is all in good fun, there are tons of smart pups out there and they don’t have to be purebred either! ) • • #dogtraining #australiancattledog #dogtricks #blueheeler #redheeler"