This is actually a drawing of my own dog, a labradoodle named 'Lola. My wife took the original photo as I was getting her lead off the hook - it's her 'walkies' face! :) I imagine a lot of dog owners and handlers are familiar with this sort of expression. I was conscious that I didn't show dogs unleashed but, having seen Vea's wonderful entries and your comment about envisioning a logo that was closer to a photo, I felt it was an interesting alternative concept for you to consider.
I'll try and work on new ideas, but my kids have broken for the summer break now and, with the weekend upon us, I'm not sure I'll have enough time.