Special to the Advance EDINBURG — One of the most challenging times of the year for animal shelters is mating season for puppies and kittens. Shelters all over the country typically see an influx of newborn and young abandoned puppies and kittens starting in early spring and lasting into fall. The intake of these populations usually halts as we head into the winter months, and that’s precisely what PVAS was anticipating. However, that isn’t the case. This year, we are experiencing an unusually high puppy population in the middle of winter, with exactly 305 puppies currently in our care.Overcrowding of ...