I have a dog bite case in which I am being sued for. What should I do?

Two weeks ago, I helped a couple re-home their dog. When I got there to pick the dog, it decided to jump through the window of the car. I only had the dog in my care for approximately one minute and that was enough time for the dog to escape. That same day or two days later another woman complained of being bitten by a stray dog. There was a similar event to which I’m now responding in person in a legal case. Under the circumstances I still am not very clear on my course of action and should I hire a dog bite lawyer to represent my case?