To effectively keep animals out of your yard with a fence, choose a fence that anchors to the ground to deter digging. Also, consider adding a barrier below the fence to prevent burrowing. 

To make your yard less desirable to animals, eliminate food sources like a vegetable garden, and ensure your garbage cans are sealed and tamper-proof. Installing motion-activated devices like lights or sprinklers will startle animal intruders. Also, a fence won’t work well if you forget to keep gates closed and secure. If you still face persistent animal intrusion issues, contact a wildlife control expert who can offer specialized solutions.

A setback is an area of space between your fence and the property line, meaning you build a fence a few inches before your neighbor’s property begins. You can build your fence on a setback—some communities recommend this—but this means a sliver of your property will be on your neighbor’s side of your fence.

Most people prefer to keep the fence level by “stepping” the fence when running a horizontal fence over a slope. Stepping involves raising each panel between the posts as the fence moves over changes in slope, giving the fence line the appearance of stair steps. While this may be the preferred method of running a horizontal fence up a slope, there’s nothing wrong with installing your fence so it follows the undulations in the ground instead.

Who pays for a new fence between neighbors depends on its location relative to the property line. If you build the fence entirely on your property, you are solely responsible for the costs of installation, maintenance, and repair. If the fence is built directly on the property line, both neighbors are typically responsible for the costs. In this case, it is essential to consult with your neighbor beforehand to agree on a plan for payment. While you should always inform your neighbor of your plans in advance, you generally cannot force them to contribute financially unless there are specific local laws, such as in California, where both parties might be responsible for costs unless a different agreement exists. It's a good idea to get a property line survey to know the exact boundaries before building.