A user is sharing the basic medical distinction between heat exhaustion (cool down, hydrate) and heat stroke (call 911) — both descriptions match standard CDC and Mayo Clinic guidance. The post is timely public health info aimed at people unfamiliar with the furry community's heat-safety memes that circulate every summer convention season. Heat stroke kills roughly 700 Americans each year, and rates are rising as summer temperatures climb, which makes simple PSAs like this genuinely useful.