Some hibernating bats’ hearts beat about 10 times per minute
AI-generated cover illustration: узагальнений кажан спить, загорнувшись у крила, в прохолодній печері; це не фото конкретного виду й не вимірювання пульсу. Походження: OpenAI image generation. Дата: 2026-10-20. Промпт: “Photorealistic vertical 4:5 editorial cover of a small brown bat sleeping upside down in a cool limestone winter cave, wings wrapped loosely around its body, a few other bats softly blurred deeper in the cave, gentle natural cave light, scientific nature-magazine photography, realistic species-neutral anatomy, peaceful and undisturbed. This illustrates hibernation and energy conservation, not a specific species or heart-rate measurement. No text, no people, no artificial instruments.”
In some bats during deep hibernation, the heart may beat only about ten times per minute. This is part of torpor, a state in which the body temporarily and sharply reduces metabolism and energy use. The value depends on species and conditions; it is not a constant heart rate for all bats.