Demographic characterization of the dog population in Viña del Mar, Chile Caracterización demográfica de la población de perros de Viña del Mar, Chile
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The high population of dogs living in the streets, specially in tourist destinations such as Viña del Mar represents a problem, that requires to study some of the characteristics of this population, starting with, the dogs that have an owner. A random survey sample of 861 households proportionally stratified according to the number of households in twelve locations of the city was carried out. The information was gathered by handing a questionnaire survey to house owners. Total population was estimated in 100,717 dogs with 95% confidence limits of 92,96.1 and 108,463; there was an average of 0.95 dogs per household, sex ratio was 1.6 males per 1 female, mean age was 4 years and 7 months, and human-dog ratio was 4.1 people per dog. The crude rate of fertility was 39.1%, and general fertility rate was 1.15.1%; the total fertility rate shows that every female rears 10 puppies during her reproductive life. The mortality rate was 23%. The growth rate was 8.2% and the turnover rate was 25%.
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