A more thorough explanation:

A good and lawful fence is a strong and well-suited barrier that is sufficient to prevent animals from escaping property and to protect the property from trespassers. It is also known as a legal fence or lawful fence. A fence that is considered good and lawful may vary depending on the location and the type of animals that need to be contained.

For example, in some areas, a good and lawful fence may be a fence that is at least four feet high and made of sturdy materials such as wood or metal. In other areas, a fence may need to be higher or made of different materials to be considered good and lawful.

The purpose of a good and lawful fence is to ensure that animals are kept safe and contained within their designated area, and to prevent them from causing damage to neighboring properties. It also helps to prevent trespassers from entering the property without permission.

Overall, a good and lawful fence is an important aspect of property ownership, as it helps to ensure the safety and security of both the animals and the property itself.