The eggs, he thought, his primal instincts coming to the fore.
You don't think about anything except the most basic primal instincts and necessities.
For all his power and natural primal instincts, he couldn't ravish her.
The security ethic is based around primal instincts which center on safety, survival, and thriving in an environment.
Everything went away except the primal instinct to survive.
A primal instinct came over me, and I just got very aggressive.
In an instant his physical misery was replaced by the primal instincts of the hunt.
Some primal instinct told them that there would be blood soon, very soon.
Maybe it was some primal instinct to protect the young.
A predator had me in his sights, and I wanted to flee, a primal instinct.