US again bags the first place with 61 million pet dogs in this list of Top 10 Countries with Most Pet Dog Population. Brazil has 31 million pet dogs and just behind US in this regard. Taking the 3rd spot is China as it contains 22 million pet dogs, which is approx 2% of its total human population.
The rough figure of the world population of pet dogs is 300 million that is to say almost equal to the human population of USA of 313,674,000. The pet dog population of Thailand is 6.9 million which is almost 10% of the total population.