Question: what is the difference between basal metabolic rate and standard metabolic rate?
Answer: The "baseline" metabolic rate of an animal is measured as the basal metabolic rate (BMR) for an endotherm or as the standard metabolic rate (SMR) for an ectotherm. Both the BMR and SMR are measures of metabolic rate in animals that are at rest, calm/unstressed, and not actively digesting food (fasting).