Answer:

B. Birds

Birds & Mammals are warm blooded animals. Fishes, Amphibians and Reptiles are cold blooded animals.

Answer:

B. bird

Explanation:

Most mammals and birds regulate core temperature to a level that is above that of the surroundings or, in some cases, below external temperature. That is accomplished through cellular respiration and the release of heat through their metabolism, sweating, altering the flow of blood in the skin, shivering, panting, and breaking down fat to release heat. Through such mechanisms, animals can control their core body temperature from within. Such organisms are, therefore, also known as endotherms (endo meaning within + therm meaning heat). Their ability to keep their core body temperature relatively stable also means that they can also be referred to as homeotherms (homeo meaning the same + therm meaning heat). An increased need for energy is required to achieve this type of thermoregulation. Such organisms, therefore, have a high resting metabolic rate, which is called tachymetabolism (tachy meaning fast + metabol meaning to change). In general, mammals and birds that are endotherms and homeotherms and have tachymetabolism are referred to as warm-blooded animals