What is the daily maintenance fluid rate for giant dogs?

• A. 40 ml/kg/day
• B. 60 ml/kg/day
• C. 50 ml/kg/day
• D. 45 ml/kg/day

Answer: (A)

Maintenance fluids replace normal daily losses and depend on body size and metabolic needs. Giant dogs require a smaller amount per kilogram because their surface area to volume ratio and overall metabolic rate reduce per-kg water requirements, so the typical maintenance rate is around 40 ml/kg/day. Rates higher than this (like 50, 45, or 60 ml/kg/day) can lead to fluid overload in such large animals, especially given their higher risk of cardiovascular strain. Therefore, 40 ml/kg/day is the best fit for giant dogs.