horse with mud fever on the fetlock, skin disease, greasy heel

wood white textile skin sculpture sand pet mammal limb leg hand footwear floor dog cat brown bird animal autumn bacteria care causing irritation cleanliness crust dermatitis crustosa erythematosa madidans squamosa dirt diseases eczema fetlock grease heel greasy grooming harvest mites health hoof horse horses hygiene immune system infection prevention inflammation itching medicine moisture mud fever open stable paddock protection scab disease veterinarian weather winter wound