Mystery surrounds the death of the black, clearly fox-looking dog hybrid in Brazil, confirmed by DNA testing - insight with Dr Jacqueline Boyd, canine science expert at Nottingham Trent University, who investigated for The Conversation news site. Kids sent 'nearly 5,000 smartphone alerts every day'. Parasitic brain worm alert.

Also in this episode:

• Finally...get ready for those flying taxis
• Simple daily activities ‘lower heart attack risk’
• Seven-mile freefall for record skydive 

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