I did some research in animal intelligence as an undergraduate.

Though the versatile hand made the robot watch closely, the creature did nothing to reveal more than animal intelligence.

"Michelle projects a lot of intelligence, more like an animal intelligence."

Creatures with simple animal intelligence fear only real things, such as their natural predators.

For pure reasoning ability, that topped anything in the way of animal intelligence he'd ever seen.

As for the issue of animal intelligence: She merely offers us her observations.

It suggests this is the definitive book on animal intelligence.

The new knowledge about animal intelligence that we are now gaining so rapidly may have a profound impact on our attitudes toward other animals.

Being of animal intelligence, they carry no equipment or treasure.

Of course the whole event might have been a test of animal intelligence.