Grin And Bare It

Quite an interesting piece.

Must admit, that as someone who was young in the late 90's, the fiery reds and the numbered collar gave the impression of a certain famous fiery Red canine. But on a closer look, the teeth and ears are unmistakably mustelid - it is true as you say yourself, the mouth could use some stylistic work, but on the other hand the tilted jaw makes for a pleasing composition. There is very little of the background visible between the teeth, making the maw seem more distinct as a separate element.
Got to say that, perhaps with the exception that the outline of the iris is a bit warped (and this is a problem I frequently share), the eyes are very beautifully done, especially the shading on the sclera. If I may be so bold, when it comes to the level of detail and lighting this particular style allows before horror vaqui takes over, your eyes may be impressively close to nearing the envelope.

Well done.