Dog/Sagittarius and Dog/Cancer meet at 78–83%, the play-becomes-work Canine encounters the shy interior-decorator Dog/Cancer. Different relationships to motion entirely. Dog/Sagittarius needs the world; Dog/Cancer needs the safe haven. The match requires constant explicit negotiation.
Chemistry is uneven in energy. Dog/Sagittarius brings the Frisbee-energy and outdoor instinct; Dog/Cancer brings cerebral musings and the home-as-cocoon devotion. The bedroom requires Dog/Sagittarius to stop running and Dog/Cancer to come out from the cocoon. Both halves can do it; neither half does it accidentally.
Conversation is fast on Dog/Sagittarius's side and quiet on Dog/Cancer's. Dog/Sagittarius riffs and proposes; Dog/Cancer reads the room and considers. The risk: Dog/Sagittarius's restless pace can leave Dog/Cancer feeling left behind, and Dog/Cancer's brooding can make Dog/Sagittarius look for the window.
Friction lives in stay-vs-go. Dog/Sagittarius climbs out the window when cornered; Dog/Cancer reads the climbing-out as abandonment. When Dog/Cancer fortifies the cocoon, Dog/Sagittarius feels the walls closing in.
Dog/Sagittarius learns from Dog/Cancer that staying inside the safe haven is its own adventure; Dog/Cancer learns from Dog/Sagittarius that occasionally leaving the cocoon doesn't mean leaving the relationship. Both halves stretch.
At 78–83%, this is a moderately compatible, real-effort pairing. Dog/Sagittarius and Dog/Cancer can build something durable, both halves have to honor the other's natural pace.