Hello. I am a new member. We have two female pups, 12 weeks old, from the same litter, but Molly is much larger & heavier than her sister Maisie. Molly does not like any attention being paid to Maisie in the form of play, grooming or cuddles. She charges into Maisie & starts mouthing & nipping at her. She also jumps on her using her full body weight. When we use toys to play with the dogs, Molly will drop her toy & grab Maisie’s toy. She does not respond to the word ‘no’. Maisie can retaliate but being much smaller I am worried that she will become hurt. I do not want to encourage this type of behaviour in either pup. It’s becoming quite difficult to manage Molly’s dominance/ jealousy now & so we keep them apart as much as possible with Maisie being on the sofa & Molly being on the floor. However, in other ways they are quite close as they eat together and live to sleep cuddled up very close together. Molly chews everything in sight & rips up her training pads, despite us using the Spray Off product where required. Has anyone any advice please?