Ben Muller, 14 Nov 2024 Hi Colleagues. A clients rhino have these lesions, any idea as to a likely cause? This has only been noticed on lactating cows and growing animals, not bulls. All lesions are on the dorsal area, more caudally, and dont seem to be pruritic. All animals are fed lucerne, hay and good quality pellet supplement currently; all are in good condition. They are on the highveld. (sourveld grassland area)