"A dominant dog can get another dog to move out of its way just by the energy it projects. You can tell a lot about a dog's position in the pack by how they hold themselves around other dogs. When reading a dog's body language, you can't do it intellectually. You can only do it by using your instincts."

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If you photograph for a long time, you get to understand such things as body language. I often do not look at people I photograph, especially afterwards. Also when I want a photo, I become somewhat fearless, and this helps a lot. There will always be someone who objects to being photographed, and when this happens you move on.

— Martin Parr