[Uhh, dang. What does he have... There are bees back at his library ("his" library) but he's not going to give a dog those. Especially since it's a dog that eats everything. He doesn't exactly have food, since he eats so sparingly...]

I have a mystery potion that probably isn't poison, but I imagine those aren't really in high demand. I have lots of scritches?

[Let him pay in scritches, Barnaby...]

I have an axe, and I won't give you that, but I could chop up monsters into more manageable steak sizes.