Dogs do not 'smile'. Just like chimps don't. They might show teeth or have an upraising of lips, but it's not a smile. They have different ways to express pleasure. Abusive comment hidden. (Show it anyway.)
Okay it's not a dingo, just looked it up. (very similar looking though, wow). It's possible it did teach itself a trick but I doubt it. Abusive comment hidden. (Show it anyway.)
Oh and if it is a dingo like I suspect, they don't wag their tail out of happiness. Abusive comment hidden. (Show it anyway.)