The Legend of Spyro: Path of Delusions Book X Chapter 30
The other evidence supporting the first impression was the fact that there was absolutely an outrageous number of dragons present in the main cavern.
The Legend of Spyro: Path of Delusions Book X Chapter 28
Mainly the numbers of dragons present in the world. it was an insane perspective and probably unreal, but seeing the permanent destruction that constant dragon fighting might cause still put some benefit of the doubt into this idea.
Spyro's Old Flame: Chapter 9 - Of Dragons and Elders
Flame sat there stiffly, feeling a sudden wave of nervousness even though every dragon present already knew about him and spyro. but spyro using the word _mate_ like that made it strangely official.