OMG PLEASE HELP FOR MY DOG.. PLEASE IM CRYING!!!! :( HELP!!?

OKAY. my mom and me went walking and before that we heard 2 gun shots... benji screached but they normally do when the dogs hear guns.. and we went for a walk and came back.. i went for a shower and my brother texted my mom to check benji (we dont no why but he just did) and benjis head was under his little house and mom took the house off his head and he just scrambled but couldnt walk!!! it looks like his neck but my uncle came over and lifted him.. and reckons its his back but now hes saying he might be epileptic!? he said he stood him up so its not his back, and he can move his neck .. ? so whats rong.. do ye think he's going to live..? hes my favourite out of the 2 dogs so./. :(