Equine law is generally defined as the body of law (statutes, court opinions) that governs the ownership, buying, selling, riding, breeding, racing, training, handling, insuring, and boarding of horses—and membership and participation in related organizations and activities. For example, contracts often define these transactions, relationships, and activities, and statutes often limit the personal injury liability of owners and operators of equine-related events and activities.

In Massachusetts, equine law encompasses various legal aspects related to horses and horse-related activities. This includes the creation and enforcement of contracts for the sale, purchase, boarding, training, and breeding of horses. Additionally, equine law covers liability issues, often limiting the personal injury liability of equine professionals and event operators. Massachusetts, like many other states, has an Equine Activity Liability Act (Massachusetts General Laws Chapter 128, Section 2D), which provides certain protections to equine professionals and event sponsors from lawsuits arising from equine activities. This law requires that specific warning signs be posted at equine facilities and that written contracts include a warning notice to participants regarding the inherent risks of equine activities. The statute also outlines the exceptions where the equine professional or event sponsor can still be held liable, such as if there is a failure to provide safe equipment or if they knowingly provide a horse that has a dangerous propensity. It is important for those involved in equine activities in Massachusetts to understand these laws and regulations to ensure compliance and to protect their legal rights.