I found three infographics about canine anatomy on Pinterest. IMHO, they are very informative … they are also too big to put together, which is why this is ‘pt.3’. On Monday, Part 1 ,covered skulls and spine (neck to tip of tail). On Tuesday,part 2 focused on teeth, paws and movement. Today, Part 3 shares an old poster of a dog’s muscular system and internal organs.