Many animals are also noted to sense fear in humans. How they do this continues to be a mystery? Many schools of thought opine that animals sense fear through some particular body odor. Some research has indicated that humans release certain chemicals in their sweat when they are threatened. Animals are capable of sensing those chemicals, as smell is highly used form of social communication in animals. However research in detail is still needed. Others think that animals sense fear in people through the latter’s body language. Still others think that animals judge the bad vibes of people.
Read more: http://scienceray.com/biology/what-animals-know-that-we-dont/#ixzz0xRhsS3Ns
My-Pedia 