a.

1. （动物）温血的，恒温的[Z]
   Cat are warm-blooded animals, but snakes are cold-blooded.

   猫是温血动物，而蛇是冷血动物。

2. 热情的；易兴奋的

adj.

1. denoting animals (chiefly mammals and birds) which maintain a constant body temperature by their metabolism; homeothermic.
2. ardent; passionate.