![](http://static.ddmcdn.com/gif/blogs/dnews-files-2014-08-dog-140822-250x250.jpg)
Domestication has resulted in dogs that are so submissive,
they suppress their innate smarts and independence, a new study has
determined.
![](http://static.ddmcdn.com/gif/hummingbird-250x250.jpg)
Scientists have been puzzled by the fact that hummingbirds
maintain such a sugary diet without a sweet-taste receptor.
![](http://static.ddmcdn.com/gif/recipes/goliath-grouper-eats-shark-200x200.jpg)
Fisherman off Florida's Gulf Coast loses shark on his line to
another fish with more immediate plans for the small blacktip.
![](http://static.ddmcdn.com/gif/recipes/mussels-and-clams-can-clean-up-dirty-water-200.jpg)
As they filter water, the bivalves' tissues absorb some of the chemicals and pathogens that are present.
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