Dog’s don’t see in black-and-white, they have 2 color receptors, and can see yellow and blue.

Dog is very helpful for human

YOU ALSO UPVOTE ON MY POST 
https://steemit.com/mgsc/@adi9911/think-before-you-pop-the-pill

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**Do not miss the last post from @steemitboard:**
<table><tr><td><a href="https://steemit.com/steem/@steemitboard/3-years-on-steem-happy-birthday-the-distribution-of-commemorative-badges-has-begun"><img src="https://steemitimages.com/64x128/http://u.cubeupload.com/arcange/BG6u6k.png"></a></td><td><a href="https://steemit.com/steem/@steemitboard/3-years-on-steem-happy-birthday-the-distribution-of-commemorative-badges-has-begun">3 years on Steem - The distribution of commemorative badges has begun!</a></td></tr><tr><td><a href="https://steemit.com/steem/@steemitboard/happy-birthday-the-steem-blockchain-is-running-for-3-years"><img src="https://steemitimages.com/64x128/http://u.cubeupload.com/arcange/BG6u6k.png"></a></td><td><a href="https://steemit.com/steem/@steemitboard/happy-birthday-the-steem-blockchain-is-running-for-3-years">Happy Birthday! The Steem blockchain is running for 3 years.</a></td></tr></table>

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