This is a good concept, but a little too cute for me. I like the font in #38, but also like how 'dog' in #39 is blue. Could you try something with the leash/collar (which looks awesome) but no dogs? Friends Again dog training is called that because I'm making 'man's best friend' a reality, so I don't want it to look too much like it's the dogs who are becoming friends again.
Or perhaps having the leash/collar start between the lines of text and then go up to circle the faces. I'd like to see it with 1 dog and a human instead, maybe with the dog licking the person?