Tessa was 12wks old when I brought her home to my 10yr old border collie\lab cross. Misty wanted nothing to do with the puppy for the first 2 wks. We ALWAYS pet Misty first when we come home from somewhere, she gets her treats first and she gets just as much attention as the pup. I never separated them except when I went out and put the pup in her kennel. Misty now acts like a puppy and it is funny to watch the two of them playing. However, when Misty has had enough, she will growl and\or snap at Tessa to let her know enough. Just like a mom would do. Hope this helps and hang in there. My cat is a different story though
