狗的寿命有多长要用英语说哦

How long is the life-span of a dog?

What is a dog's lifespan?

不过，What is a dog's lifespan in general? 会比较好。

或，In general, how long can a dog lives? 也可以。

The life span of the dog have much long?

How long is the life-span of a dog?

How long can dogs live?

我觉得最底下那个答案最自然吧