2. The only character I can think of right offhand in my roster who would do such a thing is Szayel, and he's not a terribly good guy. XP Of course, some people could also have good intentions, but their actions turn out to be bad.

3. Different species of dragons might live in different habitats. Smaller dragons may live in burrows or trees, larger dragons may live in groups out in grasslands or canyons... There'd be a lot of variety with an entire ecosystem based around dragons. ^^

4. Oh, hey! Cocoons! I like that idea for species evolutions. ^_^