Insects do not feel pain

The scientific definition of pain - "an unpleasant sensory and emotional experience associated with actual or potential tissue damage," but the power of pain and tolerance of it - the concept of a purely individual. The dog hurt his paw on the glass, whined and run away, but the man cry out in pain in the same situation, but to determine who are sick, we can not. Therefore, the study of how different animals feel pain, the analogy method is not applicable.

Apparently, the insects at all deprived of the ability to experience this feeling. The fact that no traces of nociceptors (receptors carrying information about the pain to the brain) during the study of insects and crustacea they are found, and without them feel pain impossible. This means that these animals are completely devoid of the sense familiar to us.

via factroom.ru