Comic artist Grant Snider of Incidental Comics presents a purebred dog category of which even the most enthusiastic of canine enthusiasts were not aware. Hopefully the species in this breed group aren't actually impossible; I'd love to get an invisibeagle and train him to walk off-leash and attack on command. That would be a great way to ward off undesirables! Via Laughing Squid
Poster prints of this comic and other Grant Snider works are available here.