Final answer:
Selective breeding can lead to health issues and genetic diversity loss.
Step-by-step explanation:
Selective breeding can lead to two potential problems: health issues and genetic diversity loss. When animals are selectively bred for specific traits, such as appearance or behavior, it can result in health problems like breathing difficulties or increased susceptibility to diseases. Additionally, selective breeding can reduce genetic diversity, making animals more vulnerable to genetic disorders and reducing their ability to adapt to environmental changes.