Noah's instincts exploded at that sight, but he held himself back because he knew that his body couldn't eat that stuffed creature. Also, the winged beast wasn't intact. He could sense that someone had replaced its insides with a material meant to keep the skin in place.
Someone had removed the nails and the horns too. Only the skin of the original creature remained, and that was the cause of the quasi-rank 7 aura that lingered around it.
The fact that Noah could control his instincts didn't mean that the other hybrids in the corridor could do the same.
Raphaelle began to salivate right in the middle of the corridor as an instinctive reaction to her hunger. Still, Dreaming Demon's control on her mind was thorough and prevented the snake from pouncing at the stuffed creature to appease her cravings.
The situation was different with Joel since Noah had only sealed its centers of power. The snake's mind was still active, and most of his body was free to act unless Noah's intervened.