Although it is hard to obtain reliable figures for some countries, in 2012 the total number of dogs in the world was at least 525 million. The United States alone had over 73 million.
Many countries worldwide display interesting patterns of dog ownership. Although in India the ratio of humans to dogs in 2012 was 1000 to 4, that was up 58 percent from 2007. On the other hand, Switzerland's dog population dropped 10 percent during those years. Brazil's many apartment-dwelling dog lovers makes that country home to the largest number of small dogs, at 20 million. At the other end of the scale, Saudi Arabia has one small dog per 9,400 inhabitants.Learn More
There are between 49 and 51 Muslim-majority countries in the world, according to estimates from 2010. The fluctuation is a result of the changing demographics in countries where Muslims comprise around 50 percent of the population.Full Answer >
Only eight countries in the world are known to possess nuclear weapons, as of 2014: the United States, Russia, China, France, the United Kingdom, Israel, Pakistan and India. North Korea may possess fewer than 10 nuclear warheads, according to the International Campaign to Abolish Nuclear Weapons (ICAN)..Full Answer >
The countries that do not have snakes are Ireland, Greenland, New Zealand and Iceland. The continent of Antarctica also does not have snakes.Full Answer >
Animals that migrate include bar-headed geese, Arctic terns, monarch butterflies, humpback whales, blue whales and zooplankton, according to Silke Nebel of the University of Western Ontario. The bar-tailed godwit, a large shore bird, performs one of the longest non-stop flights, spanning up to nine days.Full Answer >