The examinations of the content of lead and cadmium in the liver and kidneys were carried out on 237 foxes which included 110 females and 127 males. The level of the tested metals varried greatly. The maximum content exceeded the minimal standart 89 times in the liver and as much as 123 times in kidneys, while the maximum content of cadmium exceeded the minimal standard by 43 times in the liver and 79 times in kidneys. It was noted that an average concentration of lead in males was greater than in females: 0.142 and 0.126 mg/kg in the liver, and 0.147 and 0.127 mg/kg in kidneys, respectively. The average concentration of cadmium in the liver was identical for both sexes, i.e. 0.036 mg/kg. However, the level of cadmium in the kidneys of males was higher (0.113 mg/kg) than in females (0.093 mg/kg). The highest concentration of the tested elements was found in foxes with reproductive disturbances.
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