- Implement range multipliers for different life stages (e.g., 1.6-1.8x for intact adults) - Display MER and food amounts as ranges (e.g., '2042-2298 cal/day') - Add CSS to prevent value wrapping with white-space: nowrap - Increase calculator max-width from 600px to 640px for better text layout - Based on veterinary RER multiplier ranges for more accurate feeding recommendations