I think there are many different causes for acne, or else one solution would work for everyone.. but it doesn't.
That interesting though, I have never seen an animal with acne before, are you sure what was on your dog's belly is actually acne and not perhaps something else? I've never met a dog on a raw meat diet, but I've also never met a dog with acne, so I don't see how those two things could be linked..
Also, I have never tried any special cleanses or washes or medicines to treat my acne, because I don't want to become reliant on such things and end up to where if I ever stop using them, it comes back. However, recently I have become more desperate to get rid of it, and began washing my face everyday with alcohol, which I have heard helps to get rid of it. I also began washing my face more regularly (usually with plain water and/or alcohol) as well as exfoliating whenever I shower(with my regular bodywash). It helped me a little bit, but hardly enough for it to be noticeable.
I just got back from vacation with family though, where we were out of state and the only way for me to eat was out at restaurants with everyone, but I did manage to avoid eating anything too un-paleo, though not as much raw. For about 3 days, I mostly just ate as rare as i could get steak(and lots of it, yummy, but my dad started to complain though and saying that too much red meat is bad for me and that i would get sick from it being undercooked.), sunnyside-up eggs(so the yolks would at least be partially raw), and fruit(and drank only water, oh and whole milk once), though once I did eat some fried potato.. hash browns, I think, but they were little cubes? and another time I had to get a hamburger from fatburger, and I ate a pound of thoroughly cooked hamburger meat with some melted cheese on it, but I at least took off the bun.. but it seems that my acne is starting to go away a bit, I'm thinking that breads/pasta/grains are possibly the main cause of my acne since the hash brown things and cooked hamburger meat and cheese or milk don't seem to have made things worse but I've been avoiding anything with flour in it, so I am going to continue avoiding bread and stuff and hope that my acne does clear up..