Warrior cats is a series of children novels. The series follows the adventures of four Clans, or large groups (ThunderClan, ShadowClan, WindClan and RiverClan) of wild cats trying to survive in their forest homes. If you want to know how to draw it.
1. Make head structure followed by body structure.
2. Give outline for face details and fur effect.
3. Coloring it by giving basic color then shadow.
4. Highlights in some places
5. Give detail like claws, mustache more fur effect.