What are some effective ways to repair or replace dog-eared fence boards that have become damaged or worn out over time?

To repair or replace dog-eared fence boards, you can start by removing the damaged board and replacing it with a new one. Make sure to use the same type of wood and size for a seamless look. You can also reinforce the fence by adding extra nails or screws for stability. Sanding and staining the new board can help it blend in with the rest of the fence.