Registration is done only once and consists of a set of information collected at SIAC, namely: - elements related to the number of the transponder / microchip; - animal review elements (most relevant aspects and properties); - identification of the holder of the animal and its contact details; - identification of the veterinarian who marks the animal and its contacts; - as well as other particularities or characteristics and official preventive health measures or relevant information that have been associated with the animal.