What I have done in the past is talk to friends that I know would take care of my pups should something happen to me. There would be no way they could take the entire pack...but could take one. I have good friends that agreed. Of course they didn’t have to live up to their promises. The pups are gone and so far I’m not, lol.
I also took out pet insurance and put what money I could back for their care should I be unexpectedly be “called away”.
My sister died (RIP) and left her little dog of only about 2 years. I don’t think she stipulated anything but just assumed the family would care for her. Her son (of course, the best in the family) is taking care of her mostly, and the dog right after sis’ death was strongly attached to him (he’s a mama’s boy). If anything should happen further (mostly family issues, the way that crew is), we could take her now that we have no pets anymore. My little boy loves her.