If you don't already own one, you should obtain a crate to limit the dog's access to the cat while you're not there to supervise. The young dog may consider the cat a toy, or prey. While the cat may injure the dog's eyes, if he or she has claws, and is cornered by the dog. The crate will be useful for the whole "getting to know you" process. You could also use a baby gate to keep the dog away from the cat while your not home, at least until you are sure that they are getting along. Hope this helps.