The phrase "dog down" can have various synonyms depending on the context. It can mean to lower an animal gently or to reduce its energy level. To convey this sense, synonyms such as "calm down," "ease down," "relax," and "de-energize" may be used. In the case of training animals, "rein in," "tame," "subdue," and "break" may convey the meaning of "dog down." Another sense implies putting an animal to sleep or euthanasia, which can be communicated with synonyms like "put to rest," "put down," or "end the suffering." In either case, the synonyms used must be appropriate to the context to avoid confusion and misinterpretation.