Why has your Jack Russell got black patches on her abdomen?

Black patches on your Jack Russell's abdomen could be due to a variety of reasons, including hyperpigmentation, Allergies, or skin infections. It may also be a result of hormonal changes or reactions to environmental factors. If the patches are new, changing, or accompanied by other symptoms like itching or irritation, it's best to consult a veterinarian for a proper diagnosis and treatment. Regular check-ups can help ensure her skin health is managed effectively.