Dogs left in hot cars face rapid hyperthermia that causes suffering and death within minutes. Understanding the physics helps prevent this common and entirely avoidable welfare emergency.
Hot car deaths cause profound suffering. A dog in a heating car first experiences distress and disorientation as body temperature rises. Panting increases to maximum capacity as a desperate cooling attempt. As temperature reaches dangerous levels, the dog shows weakness, excessive drooling, and disorientation. Seizures may follow. The entire process from initial distress to death can occur in under 30 minutes. The fact that this suffering is entirely preventable - by not leaving dogs in cars - makes every hot car death a welfare failure. The suffering is prolonged, distressing, and documented by veterinarians who treat surviving victims of heat stroke.