You keep still because you think maybe his visual acuity is based on movement, like T-Rex and he'll lose you if you don't move. But no, not Velociraptor.
11 seconds sound clip from the Jurassic Park (1993) movie soundboard.
You can hear this line at 00:07:54 in the Blu-ray version of the movie.
Quote context
[...]
- That doesn't look very scary. More like a 6-foot turkey.
- Imagine yourself in the Cretaceous period.
- You'd get your first look at this 6-foot turkey as you enter a clearing.
- He moves like a bird, lightly bobbing his head.
- Because Velociraptor's a pack hunter.
- He uses coordinated attack patterns and he is out in force today.
- And he slashes at you with this, a 6-inch retractable claw, like a razor, on the middle toe.
- He doesn't bother to bite your jugular like a lion. No.
[...]