Shadows of Mallachrom Series

Far on the edge of settled space, the colony world Mallachrom is mostly wilderness. Years ago, during an invasion by the alien Talroqi, many adults were killed while most of the children vanished, spirited away to safety by the sentient canines known as Shadows. Those children came back from the wilderness changed, bound to the planet in ways they can't, or won't, explain. Called the Taken, they live on the edges of civilization. The new government on Mallachrom fears them enough to want to exterminate the Shadows and claim the Taken are dangerous--under the corrupt influence of Shadows.