As for today it has been considered that there were only five senses (sight, smell, hearing, taste and touch) that inform their possessors about the circumstances of their physical environment. However, the development of concepts related to animal and human welfare has allowed us to define nociception, proprioception, interception, exteroception (thermoception, magnetoception) as new senses. We will briefly describe the new senses:

(6) Nociception detects somatic and visceral pain

(7) Proprioception detects the position and movement of the organism itself

(8) Interception detects inner sensations

(9) Exteroception detects thermal and magnetic sensations in the environment of the organism

According to different authors can be counted 9 senses, or reach up to 11, if the visceral nociception of the somatic and the thermoception of magnetoception are delimited.

Although there is a lot of information about the new senses, in humans, veterinary knowledge is still small because of the difficulty of knowing what animals feel. For example, it is known that some animals can detect magnetic fields in their environment and that this sensation is used to guide migrations or hunting. However, studies indicate these senses are already developed in primitive animals and they are part of the survival mechanisms.

The only exception is animal nociception whose application, in clinical diagnosis, has been of great use since always. In fact, the nociception that animal have the pain caused by the different pathologies results in alterations in their behavior that can be observed and detected during field visits to the farms. Thus, most bird deaths, due to heart attack, occur at the center of poultry farms, while victims of debilitating diseases, such as diarrhea or respiratory infections, die in the vicinity of the walls. It is also known pica or malacia, altered nutritional habits, caused by deficiencies or nutritional poisoning.