I am desperate to find a book I owned around 2005. It was a collection of short stories about dragons, and I'm sure that some of them had been published elsewhere and were by well-known authors. I believe, though I am not sure, that it included an excerpt from The Voyage of the Dawn Treader. There may also have been a piece by E. Nesbitt. There might have been an excerpt from The Hobbit but I'm not certain.
I do know that there was a story about a dragon that someone found in their basement, maybe? I believe the setting was small-town old-timey Europe, with some anachronistic elements. The protagonist captures the dragon and feeds it milk until it turns into a cat.
There may also have been a story about St. George.
I do know that the book was illustrated. I believe there were a few full-color pages interspersed with black & white or linework. The artwork often felt haphazard or rough to me- similar to Charles Vess's work, I think. It was a hardcover book, not especially thick, but almost square, about the same across (closed) as it was tall. The book was in English and I am located in the US. I feel like it had a super generic name, like "The Dragon Book," or something.