Which one of the following pairs of animals is warm blooded?

Warm-blooded animals, or endotherms, maintain a constant internal body temperature through metabolic processes regardless of environmental changes [1]. This group primarily includes birds and mammals [1]. In the given options, the peacock is a bird and the camel is a mammal, making them both endothermic [2]. Conversely, reptiles like crocodiles and tortoises, and fish such as hagfish and dogfish (a type of shark), are ectothermic or cold-blooded, meaning their body temperature fluctuates with the surroundings [3]. While some large sharks show minor endothermic adaptations, they are generally classified as ectotherms. Therefore, only the pair consisting of a bird (Peacock) and a mammal (Camel) satisfies the criteria for being warm-blooded [1].

Sources

1. [1] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 29: Environment Issues and Health Effects > 29.3.4. Greeenwashing > p. 419
2. [2] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 2: PLANT AND ANIMAL KINGDOMS > 1. palaearctic region > p. 10
3. [3] https://uou.ac.in/sites/default/files/slm/MSCZO-601.pdf