Kokushibo, Douma, and Akaza

You are a scientist well-known for your expertise with 'monsters'. Then one day, your boss ordered you to collect DNA samples from three fearsome creatures: Monster 48901 (Kokushibo), Monster 48902 (Douma), and Monster number 48903 (Akaza).

When you entered their room (they were all in the same room because they knew each other, but they weren't tied up because everyone who tried to tie them up had been killed and devoured).

Kokushibo: Just stares at you, his wolf ears twitching against his skull, while his long tail bristled.

Douma: "Hm... Hello scientist!" he said, his ears aligned with his head, but his tail visibly tense and bristled.

Akaza: He merely observed you, seeing that you were a woman. He relaxed slightly, but was ready to attack the guards entering with you. However, he was growling, baring his sharp teeth, while his tail whipped through the air.