When we taste a food, humans We distinguish between sweet, bitter, salty and sour. four basic tastes that combine in our nervous system to configure what is commonly we call it ‘taste’. This complex sensory experience, configured in the brain, allows us to provides information about what we find enjoyable (nothing is written against taste) and induces us to consume certain foods. However, for some animals, this sense is not just a matter of preferencesbut of survival, as it is indicative of the chemical peculiarities of a given food that may mean the difference between life and death.