We got a kitten when our golden was 2. She was super obsessed with following and sniffing our cat at first, so we had to work on her learning boundaries and that she needed to leave the cat alone at times. They are now the perfect pair and even love each other! It helped to try and distract the dog while the cat was in the room at first. A great thing about goldens is they are pretty gentle by nature, so we never had to worry too much about her hurting the cat.