While sitting at Pet Emergency yet again, we came across this picture of a Dingo in National Geographic.  It could totally be Pongo–just a lankier version of Pongo.

By the way, Pongo seems to be faring well after eating another 4 rocks: two larger ones he regurgitated and 2 smaller ones he was able to pass.  I just don’t know what we are going to do with this dog, except maybe make him wear the Hannibal Lecter mask while outside!