My DD had a dog we think Springer Spaniel that went deaf due to old age. He learned very fast certain signs. Never seemed to bother him. He had seizures too and when he had one you had to hold him close and rub all over him to calm him as he couldnt hear you talk to him to calm him. Sadly he crossed over last year. She found him on the street half dead from starving. He would eat anything so she had to treat him like a baby and keep anything and everything up that he might think was good to eat but wasnt for him. He ate a rope toy once and got intestinal blockage from it and had to have surgery for it. We all sure miss Buddy. Farmboy in your case thats called selective hearing my DH has it too.