You can texture a creature 3D model without manual rigging by using surface-focused tools like texture painting or procedural texturing—since rigging (animation bones) and texturing (surface appearance) are unrelated processes.
Texturing adds color or details (e.g., scales, fur, pores) to the model’s surface, while rigging sets up movement systems—they don’t overlap. Tools like Blender’s Texture Paint mode let you paint directly on the model, or Substance Painter uses smart materials for realistic textures—no rig required.
For new users, start with Blender’s free Texture Paint for basic tests or Substance Painter’s pre-made materials for faster, realistic results—no rigging needed.