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cold-blooded animals

Cultural  
  1. Animals, such as reptiles, fishes, and amphibians, that cannot control their body temperature and therefore become sluggish in cold weather. (Compare warm-blooded animals.)


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Cold-blooded animals are often seen sunning themselves to warm up.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

According to the report, ectotherms, or cold-blooded animals, are approximately 90% more energy efficient than warm-blooded animals and, in the context of agriculture, “this energy differential readily translates into a potential for higher production efficiency.”

From Salon • Apr. 1, 2024

That seems to be the case for tropical ectotherms, or "cold-blooded" animals such as amphibians, reptiles, and insects.

From Science Daily • Mar. 14, 2024

Reptiles are a group of cold-blooded animals with scaly skin, such as turtles, snakes, and lizards.

From NewsForKids.net • Feb. 6, 2024

The cold-blooded animals can’t regulate their own temperature, so when temperatures drop they go into a state called brumation to survive, Howard said.

From Seattle Times • Jan. 23, 2024

The door closes behind him; Trix flings down her book and bursts forth: "Of all the heartless, cold-blooded animals it has ever been my good fortune to meet, commend me to Edith Darrell!"

From A Terrible Secret by Fleming, May Agnes