I think it has to be balanced and the balance depends on the dog. My dog does much better with mental exercise, so therefore we do more of that. I also think that the balance changes as the dog changes, so we need to adjust it to what works. Maybe next month she will do better with physical exercise over the mental. I just pay attention to her and what she needs.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD