Can dogs take codine? Asked By: Torrey Pfeffer. Date created: Sat, May 8, 2021 1:22 PM. Best answers. Codeine Precautions Codeine can be used primarily to treat dogs, as cats have a known sensitivity issue with morphine. Answered By: Marisol Dicki. Date created: Sun, May 9, 2021 3:25 PM. FAQ. =I Are air diffusers bad for dogs? Many essential oils, such as eucalyptus oil, tea tree oil, cinnamon, citrus, peppermint, pine, wintergreen, and ylang ylang are straight up toxic to pets. These ...