I read these books during the late 90s/early 00s. I believe the title may have had something to do with the antagonist, the Sorcerer, but I’m not entirely sure. My school had the first book and one sequel, I don’t know if there were more.
The book was about a boy who I think had something that the evil Sorcerer wanted. The boy befriends a small dragon who I think was called Rose, she was pink in colour but was always sent into a rage and spit fire whenever someone referred to her as pink. The dragon also had a companion, a stone dog who I think was called Flint.
The Sorcerer has a minion, I can’t remember the name, it was described (and was illustrated in the books) as a large beast with matted black fur, and curved horns like a ram. He is able to kidnap the boy at some point and take him back to the cave that the Sorcerer lives in. The Sorcerer himself owned a magic book that refreshed itself every few days, he was waiting for a specific spell to come up that he needed the boy for. At some point in the story the boy manages to escape and take the book with him. He stays in the forest for a few nights, using spells in the book to shield himself, he writes some of the spells down on normal paper because they last longer than the magical book, but they still fade; he is unable to memorize them either.
This sounds like “Melleron’s Monsters” by Douglas Hill.
You got it! Thank you, there’s no way I would have remembered that.