While probing a gas giant Class 9, the bridge personnel of Enterprise listen to siren calls and finds a wrecked starship near to collapse due to the high external pressure. T'Pol detects live forms in the ship and together with Reed and Hoshi, they use the shuttle pod to help the alien survivors. When they reach the craft, T'Pol identifies that it is a Raptor Klingon vessel, and that their crew was attacked by a toxin and is unconscious but alive. Fearing their reaction, T'Pol recommends leaving the ship immediately, but Bu'kaH awakes, attacks Reed and hijacks the shuttle. While the vessel sinks in the atmosphere near to collapse, the group tries to identify the defect to fly with the ship again.
"Sleeping Dogs" shows the ingratitude of the Klingon and how distrustful this breed is. Further, their principle of honor is also very interesting regarding they are warriors. But Archer uses shrewdness and knowledge to accomplish his objective. My vote is seven.
Title (Brazil): "Cães Adormecidos" ("Sleeping Dogs")