宠物也是家庭成员，如果养的宠物正遭受病痛折磨，很多主人会考虑让它们解脱痛苦（put it out of its misery），也就是animal euthanasia（安乐死）。

1. put down

We had to put our cat down as she was very ill.

我们不得不让我们的猫安乐死，她已经病入膏肓了。

2. put an end to its suffering

We put an end to her suffering.

我们让她解脱病痛了。