狗的嗅觉非常灵敏，这是犬科动物的特性之一。

The ___canine sense of smell is extremely sharp, which is a trait of dogs.

我的犬牙有点疼，可能是吃硬糖时咬到了。

My ___canine hurts a bit, maybe from biting hard candy.

狐狸是犬科动物中体型较小的成员。

The fox is a smaller member of the ___canine family.