Nowadays, pets exert influence on the life of human beings in aspects such as health and well-being, This is why that a lot of people choose to have a dog or a cat as a pet. However, there are factors that influence about of success or failure of relationship between these two parties, among these are the presence of children, the size of the property, if it is rural or urban, the age, size of the pet and the time of dedication for them. Altering these factors shows evidence to failure of the relationship between owner and mascot causing alternatives such as the abandonment of the mascot, and finally giving rise to the overpopulation of canines and felines that can become animals Street. These represent a public health problem due to the potential off transmission of illness zoonotic In addition to being sources of disease contamination for other animals, and causing disadvantages to society such as accidents, dirt in public roads, annoying noises, aggressive animal injuries and cause problems for the same animals such as malnutrition, illnesses, injuries from accidents, abuse by the population. As a solution to this problem. The State should promote social education policies, sterilization campaigns, and hard and clear legislation. This work aims to carry out a literature review on the regulations that exist in Latin American countries about the birth control of canines and felines and the censuses carried out in this region. In the methodology a literature review was carried out, on the subject of normative ness the search of the laws, decrees and ordinances for each one of them was realized, on the subject of censuses variables were determined as total number of animals in each study, number of houses surveyed, type of study according to its methodology, country where the study was carried out, year in which the study was carried out and source of information. From this review was obtained as results that there is a lack of regulation regarding animal birth control in 8/21 (38%) of the countries that make up Latin America and it is evident that there are 19 regulations between laws, national decrees, ordinances, Regulations, Resolutions and projects of agreement, when referring to the censuses carried out in Latin America, it is evident that 18 censuses have been carried out and in turn these have been executed in 7 countries which corresponds to 33% of the Latin American countries. Finally, It can be concluded that the method used for the control of the canine population depends on the degree of development of each country or society, being education the most used method in developed countries and euthanasia in the underdeveloped. The impulse of the responsible property of pets can considerably reduce the number of stray animals and the incidence of illness zoonotic, for this is fundamental the role of the veterinarian as educator of the owner to contribute to that the relationship pet-owner is successful.