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A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...

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A camel is an even-toed ungulate within the genus Camelus, bearing distinctive fatty deposits, known as humps, on its back. There are two species of camels: the dromedary or Arabian camel has a single hump, and the Bactrian Camel has two humps. Dromedaries are native to the dry desert areas of West Asia, and Bactrian camels are native to Central and East Asia. Both species are domesticated; they provide milk and meat, and are beasts of burden...