We have a G.S bitch 19 months old called Heidi.
She's a lovely dog most of the time but if Mum comes into the room carrying something she goes wild. She doesn't do it to my Dad or me but sometimes my brother. She watches and listens if Mums in the kitchen .....ready. We can't understand it because if Mums in the house on her own she's fine and if it's just Mum and Dad she's fine also. Dad always sits in a different chair to Mum so wondered if that was it as Me, Simon and Mum usually sit together.
We used to have her cage near the door so I've moved that but it's not made any difference.
I'm the one who's done most of the training with her, Dads idea of training was with a stick but of course that's just made things worse, Mum and Simon just carry out the 'sit' and 'no' basically. It got so bad we thought we were going to have to lose her. She's come from good stock but the breeders told us to put her in her cage and forget about her, so she realised she was at the bottom of the rankings. We've had 4 other G.S and never had this problem before. We've tried changing her food. She also runs off with tea towels and hides. I use positive reinforcement by giving her one of her toys in exchange which works well as she gets very aggressive if we just try to take it off her. We can take her own food and toys off her but if she's stolen it, it seems to be different. She wasn't socialised from being young which I've tried to put right by taking her to a local busy village in the car and then walking her around the block. She learns very quickly and is very bright.
Thanks
Helen