Dog hair loss

The absence of hair on some dogs is scientifically called alopecia and is normal in those breeds. However, in common breed, bald spots are, of course, pathological.They can appear due to a strong infestation of parasites eczema or thallium intoxication (thallium: A soft gray malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores). The symmetric fall of hair in the loin or flanks – not rare in female dogs – indicates a strong hormonal alteration. Treatment is difficult. In the worst cases, the remedy is simply castration.

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