A full reading for Rat × Virgo meeting Dog × Sagittarius is on the way. In the meantime, the score above is computed from the canonical element matrix and sign-cycle distance, and the profiles below cover each side individually.
Both the blessing and the bane of members of this introverted DoubleSign is the capacity for complete disregard of all forms of outside impetus. Rat/Virgos have a private clock that tells you your own sweet time in which to do things, and you stick to it, regardless of the demanding voice, the wheedling phone call, or the looming deadline. Such independence can naturally lead to an unhealthy isolation in matters of the heart, and you should remember to make an effort now and then to ditch your Virgo half, have a night on the town and rub some elbows with the fast crowd once in a while.
Don't go so far as to try to catch a Frisbee in your teeth, but to all lesser extents an interest in physical exercise is definitely encouraged. The Dog/Sagittarius should let their play become their work ever so slowly, without relinquishing a sense of fun -- which can be life sustaining both for your inner Dog and for all the others who count on you to show them how to have a good time.