Do all warm blooded animals have the same core body temperature?
No, the average temperature increases in smaller animals, and decreases in bigger animals as does their metabolism, which is strongly related to it. Also, temperature varies slightly on a daily basis, following the biological clock or rhythm. The changes in metabolism can be proved in a simpler way, by meassuring the relation between pulse and breathing. Every mammal breathes every four heartbeats, even if their hearts go faster or slower.