Objective: To compare romifidine and xylazine premedication in ketamine anesthesia of the dog. Design: Experimental design. Animals: Fifteen cross-breed dogs. Procedures: Animals randomly allocated into three groups of five. Group G1 premedicated by xylazine 1 mg/kg, G2 romifidine 40 µg/ kg and G3 romifidine 80 µg/ kg intramuscularly. All animals premedicated with atropine 0.02 mg/kg subc...