Does anyone remember a Smiling deer

Hello everyone I’m new here, just wondering if anyone remembers this. As a kid I was terrified of this one scene it still occasionally pops up in my mind 10+ years later. I vaguely remember an episode of this deer smiling straight at the tv and it had an unusual row of teeth kind of triangle shaped mouth? I think. Does anyone remember what episode this is. Not completely sure if it was this show or uncle grandpa.