There appeared to be only a dozen tents for 50,000 people, but already the territorial instinct was taking hold.

This may well have given the territorial instinct a cultural reinforcement after intelligence evolved.

But this does not stop people, as human animals, having evolved with deeply held and genetically transmitted territorial instincts.

Browns don't have much territorial instinct, for one thing.

Triceratops, it seemed, had a very strong territorial instinct.

He showed strong territorial instincts, treating certain public lands and wildlife as personal property.

It must be something to do with ancient territorial instincts.

I don't want to infringe on his territorial instincts.

However, this is extremely rare, and nearly all other Quintaglios have the territorial instinct.

They have territorial instincts, defending their territory mostly with shouts.