Just mildly curious for the far off future. I'd like to kind of get an idea of how you...work with? the size difference in dog sports? I have a hard time envisioning myself doing it, but I think at the point where I want to add a small dog, I might go for something that would be happy doing sports with me. I'm thinking a Crested...but is there a point where a small dog would be too small? For those that do sports with small dogs...have you done them with larger dogs as well? Do you find it more or less challenging? Similar? I don't know what the point of this thread is...just trying to get a feel.