Books with author John Sologub

When food starts to become scares in the Shepherd's land he decides to move the sheep to the highland pastures. But during the journey the group find themselves hunted by a pack of wolves. This pack, Moses knows very well especially the leader (a big black wolf with red eyes). Things get even worse when he gets separated from the others with a young ewe, and her little one. Now Moses must find a way to outrun the pack of savage beasts, and get his masters sheep to safety or fall prey to them.