I read this novel when I was young, so it must have been published before the mid 90's. It was about a young boy who discovered a baby dragon on the corpse of its mother who had been hunted by (I think) the boy's brother. I think the boy then tried to take the baby to be reunited with its own kind as dragons were fiercely hunted.
The story was set in a medieval village and I seem to remember the cover being predominantly blue in colour.