I've been hesitant to post this as if I do he'll get better, it's sod's law!
Anyway, Indie has really been getting aggressive towards the kids recently, and bit Megan (9) last night. She was walking through to the kitchen, and Indie lunged at her ankle, he often follows the kids and tries and grabs their trousers, and growls. I always tell him no for doing this, but there's not much improvement.
I shouted *NO!* , and physically put him in another room for 5 minutes. I'm worried about this though - he was wagging his tail as though it was a game, but he was snarling and shaking his head at the same time. He looked mad, really angry.
I'm worried to be honest, he's 18 weeks old, and I want to stop this. Any ideas?