A faster metabolism makes babies more susceptible to dehydration. Even sitting inside on a hot day can put them at risk.
Kids should sweat in hot climates. When they stop, it's a sign that their bodies can't cool down.
Hot, humid weather can trigger respiratory problems, such as an asthma attack or flare-up of chronic obstructive pulmonary disease.
Because they don't sweat, dogs and cats have a harder time regulating their body temperature and staying cool.