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An ectotherm (from the Greek ἐκτός (ektós) "outside" and θερμός (thermós) "heat"), more commonly referred to as a "cold-blooded animal", [1] is an animal in which internal physiological sources of heat, such as blood, are of relatively small or of quite negligible importance in controlling body temperature. [2]
However, endothermic homeotherms (generally referred to as "warm-blooded" animals) not only produce more heat but also possess superior means of retaining and regulating it compared to other animals. They exhibit a higher basal metabolic rate and can further increase their metabolic rate during strenuous activity.
Warm-blooded animals could have gained an advantage by creating an inhospitable environment for many disease-causing organisms, thus reducing the risk of infections. Insulation and Thermoregulation: Homeothermy could have originated as a response to the development of insulating structures like fur, feathers, or other coverings. As animals ...
In general, dogs that can handle hot weather have roots in warmer climates, short coats or physiques that effectively cool Canines regulate heat differently than humans. While we can sweat to stay ...
A cold weather strategy is to temporarily decrease metabolic rate, decreasing the temperature difference between the animal and the air and thereby minimizing heat loss. Furthermore, having a lower metabolic rate is less energetically expensive. Many animals survive cold frosty nights through torpor, a short-term temporary drop in body ...
While sensitivity to cold can vary by factors like a dog's health, age, size, coat thickness, and more, the ASPCA warns no dog should be left outdoors amid below-freezing temperatures.
Dinosaurs were initially cold-blooded, but global warming 180 million years ago may have triggered the evolution of warm-blooded species, a new study found. Study reveals when the first warm ...
Cold-blooded is an informal term for one or more of a group of characteristics that determine an animal's thermophysiology. These include: These include: Ectothermy , controlling body temperature through external processes, such as by basking in the sun