After hearing Lucien's words, Dumbledore nodded and casually reminded him:
"If any details don't feel quite right, you can use Transfiguration to alter them. The changes will remain the next time you come in."
Lucien drew his wand and began conjuring facilities convenient for potion-making and alchemy.
Watching Lucien's skilled, effortless Transfiguration, Dumbledore smiled faintly, seemingly reminded of the trapdoor in the Three-Headed Dog's room—another ingenious work of Transfiguration.
"Three-Headed Dog bites are rather difficult to treat, aren't they? After all, they carry Dark Magic."
Hearing Dumbledore's question, Lucien did not stop what he was doing.
Tsk, and he calls himself an old man with a poor memory?
In truth, Lucien was not surprised that Dumbledore had suddenly raised this question.
There were so many ghosts and portraits in the castle. When Harry and the others encountered the Three-Headed Dog and fled through the castle, they would certainly have been noticed.
And those ghosts and portraits served the headmaster, so Dumbledore had probably learned that very night that Harry had been bitten by the Three-Headed Dog.
As for afterward, when Harry ran to Hagrid's Hut, even without those informants telling him, old Dumbledore could have guessed.
All Dumbledore had to do was ask Hagrid and compare accounts. Who had treated Harry? Wasn't it obvious?
Lucien stopped using Transfiguration and put away his wand.
"It was fine. With a combination of certain special Potions, the Dark Magic on the Three-Headed Dog's teeth could be removed. Treating the wound itself was actually quite simple."
Since Dumbledore already knew Lucien had treated Harry, there was no need to deliberately conceal it.
Of course, there was no need to reveal the little qilin's existence for now.
Dumbledore probably would not press the matter either.
Just as Lucien expected, Dumbledore merely nodded with a smile.