We had the same situation a couple years ago. Sasha is Max' full sister but 8 months younger. There will be some jealousy on both sides. Each one will want your 100% attention all the time. But it sounds like Molly is just like Max. He is very friendly with other dogs and was the most patient big brother you could ask for. Sasha would jump on him and nip at him and he took it all in stride. An now they are the best buds in the world. I always made sure to never exclude either one. If one got a treat so did the other. If one got a hug they both did. They both sit on my chest with their tails wagging into each other licking my face at the same time. There will be the occasional snap at each other but they are dogs - that is what they do. Whenever one gets mad at the other I just put my hand between them and tell them to be nice. I would expect the younger sister to follow Molly around like a shadow because that is what Sasha does to Max. I think it is great you are getting her a companion and wish you the best of luck!
__________________ Max & Sasha's daddy |