Can we break a home rental lease with 18 months remaining?

We rent a house from a couple, but we have noisy neighbors across the road. Dogs that live outside year round and bark night and day. We have tried talking to them, resorted to lists of days/times of disturbances, talked to local animal control and the police, but we are very rural - unless a second household complains, they won't even contact the owner, so we're stuck whereas we're the only affected neighbor. I work from home and my office is less than 250 feet from the dog - he's barking as I type this and it woke me from a dead sleep at 4;44 am this morning. My bedroom is right next to my office. Can someone review my lease and see if we can leave? Our landlord just had a child so he wanted a two year lease to not worry about this house, so it's pretty strick - cannot be broken if I'm sick, injured, lose a job, etc. Animal control and local police say we're on our own. We don't know what else to do but move. Thank you.