Dogs are the most popular pet in the world, with the global dog population estimated between 700 million to 1 billion dogs around the world. Thats about 500 million more than cats, the second most popular pet. Dogs are most popular within America, and are in about 40% of all households around the world.
There are an estimated amount of 450 different dog breeds. Most breeds were derived from small numbers of founders within the last 200 years. Most breeds came from small numbers of founders within the last 200 years.The skull, body, and limb proportions between breeds display more diversity than any other animal.
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