人類的行為對環境及生態動物造成的影響，令動物患癌的風險增加。人類的污染、食物、垃圾、光害等，或這些物質所產生的毒素，導致野生動物出現營養不良、免疫功能下降、基因變異等問題，增加患癌症的風險。
human activity is affecting the nature and wildlife, and is inducing cancer in other animals. human pollutants, food waste, light pollution, or toxins derived from these substances, are causing problem like nutrient deficiency, decreased immune function, DNA damage, etc., and increased cancer risk.
https://cosmosmagazine.com/biology/humans-are-giving-many-other-species-cancer
