I saw this, the thing that weirded me out was the article is like a B movie trailer.
They've been splice with Piranha DNA.
The SyFy Channel Proudly Presents: CANIHHA!
In Nashville there is a huge wooded park with walking trails that had (and prossibly still has) a serious problem with a big pack of feral dogs. These dogs regularly went after folks riding bikes or walking their dogs along the trails. One woman was even arrested for sneeking out at night and feeding them, just like Betty White in LAKE PLACID!
It got so bad the dogs were going into the surrounding neighborhood at night (where I lived) and snatching pets off porches and out of yards. I swear one night they were outside my fence trying to recruit my German Shepherd to join the pack! I looked out and my dog was sitting at the fence and just looking at about ten dogs sitting on the other side. They took off as soon as they saw me.