warm-blooded creatures
Internally regulated organisms
Warm-blooded creatures are animals that maintain a constant internal body temperature regardless of their environment—mammals and birds.
The term distinguishes them from cold-blooded animals like reptiles and fish, whose body temperature fluctuates with their surroundings.
Figuratively, warm-blooded can suggest passion or vitality: a warm-blooded response to injustice.
- mammalsHair-bearing, milk-producing animals
- birdsEgg-laying flying vertebrates
- heartbeatRhythmic cardiac contraction
- furAnimal body hair
- feathersBird's lightweight covering
warm coat · bird's nest · pulse · body heat · nesting · nursing · hibernation · migration · predator · prey · fight or flight · vertebrate · animal · wildlife · wild animals · endothermic · body temperature · metabolism