I was already thinking about going into the woods and finding some kind of animal, like yesterday's rabbit and returning, when the professor began to roll up his sleeves in front of me.

- You ... - I stammered, and then, again out of habit, taking a deep breath, continued, - are you ready to give your blood?

“I don’t see anything wrong with that,” he said calmly, and I swallowed again, feeling my fangs ache painfully. I just wanted to stick them into the supple, pleasantly smelling skin and drink the hot scarlet liquid with pleasure.

A picture immediately appeared in my mind's eye where I was doing all...