I recently adopted 2 kitten sisters and are 3 months old now. They play together everyday, with toys and each other, chasing each other or play fighting, climbing and other activities but for the past 2 weeks I've noticed that one of them gets very possessive of certain toys or objects in the house and will growl at her sister, even if her sister isn´t near her but still in sight, although it does keep her sister at a distance so she just sits and stares at her playing and growling.

My husband and I fear this might lead to a fight between them if her sister comes too close or just distance them from each other because she won´t play with her sister when she has those toys or objects.

I´d greatly appreciate your help with this matter to maintain a happy feline home.