Abstract: The present invention is particularly applicable to cattle and buffalo livestock, and allows the individualization of animals by observation of codes and characteristics that are visually perceptible and available in various manners in the animal in order to allow the correlation of the information collected in non-electronic means and relative to the management practices performed on the animals at any phase of breeding thereof, providing an unambiguous individualization of the animal for subsequent inclusion in a database. The said identification is provided by a combination of at least, a portion of an Integral Code with a portion or a complete sequence of another Integral Code, according to standards previously defined by the managers/administrators of the system. One of the Integral Codes may be compatible with the ISO 11784 or equivalent standards, and the other, not related to the said standards, may be assigned to the animal by a specific entity, by the owner or the manager of the herd.