狗肾 meaning in English

dog kidney
dog´
dog's testis and penis
s testis and penis

So how and why did it get into pet food that caused kidney failure in cats and dogs
它是如何进入宠物食物并引起猫狗肾衰竭的呢？
So how and why did it get into pet food that caused kidney failure in cats and dogs
但它为什么、怎么会混入宠物食品并导致猫和狗肾坏死呢？
So how and why did it get into pet food that caused kidney failure in cats and dogs
那么它是怎么又为什么进入宠物食品，引起猫狗肾衰竭的呢？