the three eight-week old puppies were found inside the box on april 18 .
a woman saw the box , left outside of a tennessee goodwill donation site , moving and approached it finding the dogs .
the labradors were taken to mckamey animal center for treatment which said the animals have worms and are malnourished .
it also said it is likely dogs have been neglected over an extended period of time due to their poor condition .
since beginning treatment , they have been flourishing and will be put up for adoption once treatment is complete .