She has a pet rabbit.

她有一只宠物兔子。

We went to a farm and bought my son a pet rabbit.

我们到了一座牧场去，还帮我儿子买了一只宠物兔子。

There were three of us in the family, or four counting my pet rabbit.

我家有三口，或者说四口——如果算上我的宠物兔。

My neighbor's pet rabbit was savaged in a dog attack.

我邻居的宠物兔被一只狗扑咬攻击。