All textures are packed into the blend files.

The default render engine is eevee but you can switch to cycles if that is your preference. 

Additional pbr textures are provided for use in Unity and Unreal Engine 4.

Hdri used in scene set up has been replaced with a placeholder image. You can either swap the placeholder image with your preferred hdri image or with the original free hdri used in scene set up through the link provided in the text document.

A total of 2 blend files are included. They comprise of 2 rigged models.

The FK rig has two bone chains joined in the middle, which enable you to conveniently create quick poses. The IK rig comprise of a single bone chain running from the neck to the tail, with the head bone attached to the root of the body bone chain. 

The jaw bone is the child of the head bone while the tongue bones are parented to the jaw bone. This enables you to constrain and animate the snake along a spline/path, while animating the head, jaw and tongue bones independently.

Spline/path setup is not provided.

Photoshop CS6 layered texture map template is provided for those who would like to modify the colours.