Why Does My Dog Have Red Spots On Her Belly?

Why Does My Dog Have Red Spots On Her Belly? Fleas, mites, and ticks can cause irritation, exposing your dog to bacteria, yeast, and fungal infections. Demodex mites, walking dandruff, flea allergy dermatitis, and sarcoptic mange (caused by the Sarcoptes scabiei mite) can all cause rashes on your dog’s skin, including her belly and groin