This is a paid asset, but now you can download the “Dragons – Fantasy RPG – Customizable Dragon Pack” for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
For more detail this asset from the Unity Asset Store:
“If possible, please buy the package to support the developer”
The most realistic dragons available, with three heads, four back options, two tails, and unlimited texture customization. Plus mesh morphing, music, particles, sound effects, and concept art!
Dragons Pack PBR is a highly detailed package containing Three Heads, Four Back options, Two Tails & unlimited texture customization with the Substance Painter source files. Tons of animations bring the Dragons to life, both on land and in the air. Particles included. Also comes with a Saddle, Reins & Bridle. Mesh morphing allows for each head and the entire body to be morphed for infinite looks and in-game randomization.
Get paid unity asset for free