I'm not sure what your basis is for either claim. How would a duck that was aware it could die behave any differently than what we observe? What makes you think that fear is a conscious emotion in humans and an unconscious reaction in animals?

If you were a member of an alien species briefly observing the Earth 50,000 years ago, you'd probably use a similar argument that humans aren't conscious. Sure, they hunt, they play, and they show fear of danger, but that isn't substantially different from other mammals.