Sub‑adult Stegosaurus hind legs clip into ground during grazing animation

When sub‑adult Stegosaurus plays the grazing animation, its hind legs clip and sink into the ground. This model‑collision glitch only happens during the grazing action and does not appear in other animations.

When my sub‑adult Stegosaurus plays the grazing animation, its hind legs sink and clip through the terrain. This model‑collision glitch only occurs while performing the grazing action. Please refer to the attached video and screenshots for details.

During grazing animation, all legs of Stegosaurus should remain above the ground. Hind legs must not sink or clip into the terrain mesh.