![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-07-shark-slaps-fish-130710-250x250.jpg)
Some sharks slap fish to death, killing up to three or more fish with just a single slap.
![](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-07-green-crab-SAMLL.jpg)
In New England, invasive green crabs started by pinching
scallop and mussel populations. Now they may move on to lobster.
![](http://static.ddmcdn.com/gif/recipes/dogs-american-roots-revealed-130709-200x200.jpg)
These Alaskan breeds show no European heritage in their genes.
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