Rodents are sociable animals that live in colonies and the sighting of one is due to the expansive group of rats process, so it’s really probable that there will be many more. Also, being nocturnal animals, sightings during the day means that it’s a “weak” rat in their social hierarchy that has had to move its food schedule outside of the dominant rats, so, during the previous night, there would be many more in the same area.

In the spread of various diseases to human beings and domestic animals; they are considered one of the main vectors of disease transmission, serving as a transport and rapid diffusion, for their way of life in Group and in proximity to man: diseases such as the plague, murine typhus, rickettsial eruption, salmonellosis, dysentery or leptospirosis among others.