I'm sort of grumpy - I was supposed to have the day to work on it because we weren't taking Matt's mum and grandma out until NEXT weekend, but apparently we're going over today anyway, so now I can't. I was getting the painting itch!
Very cool! Here's some of my favorites of Quinn but I'll give you a link to my flickr as well in case you have something else in mind. Flickr: Charlotte_L's Photostream
I think Victor would be a challenge for you. Pointers look very right from one direction and very strange from another, the differences are very subtle, but good practice. I will think on a pic.
Feel free to use Peco if you'd like....Well, looks like I'll have to fuss with it a bit. Also, are you only looking for dogs or are you open to other pets?