"I'm sure you will create a place in your memory just for them." He smirks a little but it isn't patronising. Animals are stability for Will, a source of unconditional love. He is a saviour to them, giving them a home when no one else does. Hannibal wonders if he collects a dog for every human he can't save. Every human he loses to a killer. A killer just like him.
He holds out the bottle to Will. "Not quite planned but I thought I might give you the option to should you wish. After all, I believe this a celebration."