Dream of exploded, hugged, killer, number

I was carving meat (chickens but looked like dogs). The meat was frozen and I was trying to make it smaller so it would fit in the freezer. Mum was moaning at me as there was not enough room. I told her I would use my freezer also. Me and mum lay down on the sun lounger in the garden... I lay on top of her facing the sky and she hugged me. A neighbour (was ian Riley from work but in Andy's house) was watching us lie in the sun. I started to worry that he'd think I was fibbing about my mum dying. A big chunk of the dream I can't remember but I do remember that the end repeated a number of times (all with slightly different endings). The general gist was I was with other people running away from a killer dog. It was underground and involved some swimming. The dog always seemed to be able to keep up. The last time it repeated I fell into a trap. There was a window slightly open but I knew if I pulled it fully open to climb through a bomb would explode. I decided I didn't care... Pulled it open with such force that the bomb didn't go off. I escaped through the window, ran down a street and by the time it exploded I wasn't within the impact range.