"When I first saw Missy walk through my door I thought, oh gosh, she is a puppy herself," Altieri said in the release. "Within two weeks she almost doubled in size due to the pregnancy."
Missy wasn't showing much when she was first rescued, but soon became very visibly pregnant, very quickly. "We had no idea how many puppies she was carrying," Altieri said. "It was difficult for her to walk or scratch herself."
Less than three weeks after being rescued, Missy finally gave birth - to 12 puppies.