Titanium's River Crest Zakster. "Zak" is one of the 6 male puppies from our Summer 2015 Dana/Joey litter. His color is silver sable. Zak is a big, confident, and inquisitive boy. He is a bit more thoughtful and reserved than his brother, Rebel, though no less assertive. We are thrilled to have him and his brother, Rebel, here at Cooper's Cove.