Dogs and humans have been hanging out together for quite a long time.

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So we feel pretty comfortable around one another.

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It’s almost like we know everything about each other. However, these 13 facts should give even the biggest of you canine fans a solid test of your doggy smarts:

#13. They’ve been working with us for what seems like forever.

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#12. They have reasons for their odd behaviors…

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#11. They can probably taste your last meal on you.

Photo Credit: DYK

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