Well, I've never seen a platform game with a dog before. It's even kind of cute! I probably wouldn't play it myself - I assume it's meant for kids due to its innocent character and display - but I'm sure a few generations younger would like it!
I especially love the last 'outro' part of your gameplay movie on Steam. You kept it perfectly fun, cute and innocent. You definitely have skill with animation and character display, keep it up!
One thing though; it seems to be all and only about running over and across obstacles/platforms, is it an 'auto-running' game only? I wasn't sure about that if you could control the character.
I mean, you could make much more of a 'Little Dog Bob Adventure' game if you could control the dog more. You know, turn left, right, enter kennels to go to another or sub level, dig pre-dug small holes further out and go into an underground tunnel, or find enough dog biscuits to transcend to the clouds (bonus level). Maybe even a 'boss' level where you must sneak past a mean dog, and/or find the dog whistle that'll scare it off so you can enter the 'big' kennel and go to the next level.
And on the final level, find his leash so his 'boss' will come by and finally take him away. You could save different fellow dogs in or at the end of the level from a cage that the boss dog guards. Doesn't have to be a dog only game, you could also save pet cats, birds, mice, etc. For example, after freeing the bird, you must follow it and not lose track while overcoming obstacles.
I understand that I suggested this with Mario-esque gameplay in mind, I'm not exactly experienced with creating platformers but I'm sure you get my drift; there's so much more you could do with this concept. Or save it for a second title catered to a bit higher age group: 'Little Dog Bob: Adventure'. I suppose anyone could make a game with these ideas, but you already have a concept, the drawing/animation skills, and got accepted onto Steam thus giving you a foot in the door.