Oh man, Rottweiler bite in the back of a head. XD Coincidentally my best buddy's had a Rottweiler for years. No bites yet, though it does look kinda scary when it rushes to greet you as you arrive, teeth bared, saliva foaming, barking like crazy, not really realizing who you are until... last second, oh, it's you! Tail wag. As for the sketch: good stuff as always. Agree about the Pugs too, they're something else...
-cd-