BBC Shorts: Body clocks, smart dogs, Nigeria anger

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Some of the day's top news stories, in 15 seconds. For more news stories, visit the BBC on Instagram.

WHAT DOES BODY CLOCK DO?

Our internal clocks have a profound impact on our body. Find out more here.

MACHINE TO MAKE DOGS SMARTER

A team of US graduate students has developed a dog feeder which they believe can make pets smarter. Watch more here.

ANGER AT SCENE OF BOKO HARAM MASSACRE

A local governor and BBC crew in Nigeria are chased from the scene of a recent Boko Haram massacre by angry crowds. Watch more here.