It's proven that dogs smile. That look they give that's a total grin? It's scientifcally proven to be a smile-but dog owners have known this for ages!
Some owners say their dog laughs.
And I swear Mikey laughs. There are two real specific scenarios I can think of right now where he laughs.
One is, when my dad comes over, he fusses over Mikey but won't let Mikey kiss him. Mikey is VERY kissy. So Mikey will make like a ninja and sneak a kiss in. AS soon as he *scores* he trotts of laughing. His laugh is a big open mouth grin, with a develish look in his eyes, and he avoids direct eye contact while laughing (where as when he smiles he looks right at you.)
The other is when he's in a funny mood, and he totally plays with us. We'll ask him to do something (ie. sit or lay, easy things he always knows how to do) and he'll do something completely different-and then laugh.
Ok, also if we pull pranks on him (ie. hide on him and call him, pretend we're going to bed in the afternoon) he laughs. Does your dog laugh? What at? What does he/she look like when they are laughing?