pig读音为什么变了

pig英文发音： [pɡ]

中文释义：

n. 猪；猪肉

vi. 生小猪；像猪一样过活

例句：

I'm afraid I made a pig of myself at dinner.

恐怕晚饭我是狼吞虎咽了。

Pigs were grunting and squealing in the yard.

猪在院子里哼哼地叫个不停。