My current pet name for her is "bear" because she has to hibernate every night.

我现在给她的爱称是“熊熊”，因为她每天晚上都要冬眠。

Tom is the pet name of Thomas.

汤姆是托马斯的爱称。

It was Her pet name for me.

这是她的宠物的名字为我。

You know what my mother's pet name for me is?

你们知道我母亲给我取的小名是什么吗？

Just started you to shout "pet name" time, my first came out.

刚开始你在喊“爱称”的时候，我第一个出来了。