I don't know about you, but pets in our family are considered FAMILY and when one of them dies, it's so painful. So I made up this card in advance of needing it.
I've had to try and do something when my mother's pet died a couple years ago (before I started doing the card making thing) and it was hard. Then my husband and I had to make that decision a couple years ago too, to put down our faithful companion of 18 years as he was suffering so much. This is an adorable image (especially the 3 different critters!) that would work for anyone I think. They make you smile. And of course, if you know the pet's name you should use it. Since this is in advance or ready should someone I know need one of these, it's pretty generic here.
Hope you have a wonderful Saturday planned. And if, like here, it's too hot to be outside, stay inside in the A/C and make some cards!