I always hope I don't leave any dogs behind when I go.
I can't bear the thought of my dog waiting for me to come home for the rest of his life.
Much as I think mine adore me, I believe they would adore ~anyone~ who fed them and let them on the couch. I worry for what my family would choose for my pets, if they would take them in or give them away. My dad would probably take my dogs out of responsibility, but they'd be a pain for his lifestyle.
Before I was married, I had very specific instructions on what should become of my horses. I suppose those still stand if both of us go at once. I have an old horse who should not be sold.