Is our neighbor responsible for her cat that injured our dog while her cat was in our yard?

Sorry to hear about your dog's injury. The short answer is "Maybe", if you can prove that the cat caused the injury to your dog, your neighbor might be held responsible for the cost of treating your dog's eye. One of the responsibilities that we take on for bringing animals into our human neighborhoods is that we then become responsible to protect our neighbors from the consequences of those animals acting out their natural propensities. With really wild animals, and with more domesticated animals under special circumstances this liability is often "strict" - that is, you don't need to prove that the owner was negligent in his management of his animal. With more domesticated animals, including cats, you would need to show that the owner realized that his animal had a dangerous propensity to injure other animals or people and failed to take reasonable steps to protect the neighborhood from that propensity. Talk calmly to your neighbor about sharing the cost of the vet bill. This is a situation in which you should consider the long term emotional effects of trying to force your neighbor to pay. Neighborhood litigation is a messy and harmful process. If you feel you have no other recourse for resolving this matter,to your satisfaction, look at the Small Claims Court in your county.  We wish you the best of luck in charting this course Brian Chase, BISNAR|CHASE, Personal Injury Attorneys. http://www.BestAttorney.comhttp://www.ProductDefectNews.com 800-956-0123