There is a distinctive and easily recognized open-mouth expression that is the canine equivalent of a human smile, illustrated here.

One such issue is whether or not you should kiss your dog on their mouth or let them lick your face – for some people ... but this little dog who… I open his mouth and insert my tongue.

Such toys frequently featured a face with an extended tongue lapping out over the front of the open mouth, thus mimicking the smile of a dog. A rough translation of the typical labels used to ...