I have a similar issue... Treasure is 2 and Olive is 5 months. Treasure is very passive aggressive and Olive is the bully. Treasure stands her ground and won't let Olive dominate her but she seldom retaliates. She's not as playful as Olive. Olive thinks she's playing sometimes when she's tormenting her sister. I've seem Treasure snap back at her so I'm not too concerned. I keep Olive in her crate when I'm at work and Treasure gets to run free. I don't know if it's mean or wrong, I just don't trust them alone together yet. I hope it gets better in the future.
__________________ Suzy  's Olive  |