Chronic sympathectomy of the caudal artery delays cutaneous heat loss during passive heating

► Caudal artery denervation slows down cutaneous heat loss during heat exposure. ► Caudal artery denervation decreases the temperature variability of tail skin. ► The variability of the core temperature is not altered by caudal artery denervation. ► No signs of reinnervation were observed 30 days after caudal artery denervation. ► Sympathetic innervation provides fine-tuned control over cutaneous heat loss.