When an off-duty Jenkins County sheriff's deputy pulled a plastic-wrapped, weighted-down body from the Ogeechee River at Scarboro Landing on Saturday, he had no idea it would turn out to be that of a dog. The reason someone would go to the trouble of binding a large dog in a tarp, wrapping it in plastic and weighting it down with concrete blocks is a mystery, said Jenkins County Chief Deputy Wesley Aaron. The unnamed sheriff's deputy and others were fishing at Scarboro Landing around 2:30 p.m. Saturday when he noticed the suspicious bundle.