Bugs, or errors, are mistakes in computer programs that cause them to behave unexpectedly or incorrectly. These issues can arise from various sources, such as coding errors, incorrect logic, or unexpected user inputs. Bugs can lead to software crashes, incorrect calculations, or other malfunctions that disrupt the user experience. Identifying and fixing bugs is a crucial part of software development. Developers often use debugging tools and techniques to locate and resolve these issues. Regular testing, including methods like unit testing and integration testing, helps ensure that software functions as intended and minimizes the occurrence of bugs before release.