yes, find a lawyer

dog bite lawyer, they are everywhere. 

Your loss is limited to the value of the property you lost.  There is no chance to recover emotional damages. 

https://www.nerdwallet.com/blog/insurance/homeowners-insurance-cover-dog-bites/

home owner insurance not only covers the home, it also covers home owners and their family's liability outside their home.  If their dog caused damage outside the property, it is the home owner's negligence to keep their dog safely, therefore the home insurance usually pays.