I have 2 little girls! One will be 9 yeas old in April and the other will be 6 years old March 26. The older girl was 3 when the new puppy came home to be her sister. They are like 2 peas in a pod......of course there is the occasional time when they growl but they get over it in seconds. They are my "little girls" and even now enjoy their new cousin...another little girl....a cavelier king charles spaniel who was 1 year old in November. We doggie sit her daily ( since she was brought home at 6 months old) and she is part of the family.
Also have a 17 lb. male kitty who they love to chase and play with everyday. They take their important nap daily and all four will sleep together on the couch! I am so lucky and blessed!