"He is not afraid of dogs" 是一个常见的表达方式，用来描述一个人对狗狗没有恐惧。例如：

He is not afraid of dogs, so he often takes his dog for a walk in the park.
She is not afraid of dogs, even though she was bitten by one when she was a child.
My pttle brother is not afraid of dogs, so he always wants to pet every dog he sees.

"Not afraid of dogs" 这个表达的来源可能源于人们对狗狗的恐惧是一种很常见的情绪，因此描述一个人不存在这种情绪时，就会使用这个表达。

中文翻译如下：

他不怕狗狗，所以经常带着它去公园散步。
她不怕狗狗，尽管她小时候曾被狗咬过。
我的小弟弟不怕狗狗，所以他总是想去抚摸每只狗。