<human>: Give me a shortened version of the text

It's been five weeks now since I've been at my parent's house. My Jack Russell Terrier, Eddie, has made it impossible for me to bring him home to my parents. 

Everyone is confused as to how or why it started, but last time I was home and the time before that, Eddie lunged and barked at my mum every time my mum stood up. The last time it happened seemed the most aggressive sounding bark/growl wise and I caught him before he got to her. No bites, but still aggressive. 

Over Christmas, Eddie spent a month with me at my parents house and he loved my mum, everything was great. My mum even cried when Eddie left. Then, in the new year, we were all gathered round watching TV, Eddie was happily chewing a bone, when suddenly mum stood up and he ran at her, jumped on her and barked an aggressive bark. Out of nowhere, that was the start of it. 

So where do we go from here? My parents love Eddie but they've obviously grown weary of him because of this! How do I get him to stop? How can we trust him again with my mum?
<bot>: My dog who loved my mum suddenly decided that every time she stands up, he's going to lunge at her and aggressively bark. Behaviour started seemingly out of nowhere. Please help!?