>>5000326
>How the duck doesn't he fall over

Whenever I'm confused or critical of a dinosaur reconstruction I cross-reference it's design with a modern day bird that "does the same thing".
The Spinosaurus is clearly a Cormorant from Hell, and as seen in pic related; they can stand and walk around exactly like that, so I don't see an issue here. The Spinosaurus is a mostly aquatic animal, it's natural for it to look a little fat and stupid on land.