If your research requires you to look into state legislation, organizations such as the Brooks Institute, Animal Legal Defense Fund, the National Agricultural Law Center, and Animal Welfare Institute, may be good places to start for up-to-date overviews of state legislation in all 50 states.
You may also find it helpful to look at your official state government's site for statutes and proposed legislation. Vermont's codified statutes can be found here and the state's animal cruelty statute here.