What relative humidity range does the Guide recommend for most mammalian species?

What relative humidity range does the Guide recommend for most mammalian species?

• A. 20%-50%
• B. 30%-70%
• C. 40%-80%
• D. 50%-90%

Answer: (B)

Maintaining a stable relative humidity within an appropriate range supports respiratory health, hydration, skin condition, and overall comfort for most mammals. The Guide recommends 30-70% relative humidity because this window balances risks from air that's too dry (dry mucous membranes, skin irritation, increased static) with risks from air that’s too humid (condensation, mold growth, ammonia buildup, and poorer air quality). Humidity interacts with temperature and ventilation, so keeping it in this range helps animals regulate body temperature and reduces stress. Some species or life stages may need adjustments, but 30-70% is the standard target for most mammals.

Maintaining a stable relative humidity within an appropriate range supports respiratory health, hydration, skin condition, and overall comfort for most mammals. The Guide recommends 30-70% relative humidity because this window balances risks from air that's too dry (dry mucous membranes, skin irritation, increased static) with risks from air that’s too humid (condensation, mold growth, ammonia buildup, and poorer air quality). Humidity interacts with temperature and ventilation, so keeping it in this range helps animals regulate body temperature and reduces stress. Some species or life stages may need adjustments, but 30-70% is the standard target for most mammals.