I am a fan of blues, greens and teals (but probably not together). I also want to incorporate Tandem into the imagery. The definition of tandem is one follows the other. I picture this as a dog following a person or two dogs together. The basis of my business is helping owners trust their dogs and have the freedom to take them anywhere, so having mountains or some kind of landscape outline in the background would be great. 

I really enjoyed your take on the concepts I laid out in my description. You were very fast to upload any updates or corrections and I appreciated you giving several versions to choose from. Thank you so much!

Tandem Dog Training