Short answer: False. Reasoning:
- Endotherms (warm-blooded) generally have higher metabolic rates than ectotherms (cold-blooded) of the same size, especially at rest and during standard conditions. This is because endotherms maintain a constant internal body temperature through metabolic heat production, which requires a higher baseline energy expenditure. In contrast, ectotherms rely heavily on environmental heat sources and typically operate at much lower metabolic rates for a given body mass. These patterns hold across a range of taxa, though absolute rates vary with temperature and activity level.