As most of you know I lead a pretty solitaire life. Sometimes going months without anyone stopping by. I often think about my dogs dying of thirst/starvation if I were to stroke out one night.
I installed a doggie door in the wall of the house for that very reason.
Not really on topic but I thought I'd pitch in:
There are a variety of very cheap "telehealth" solutions that single/elderly people can use to solve these issues.
They include check in procedures at your pre-determined time interval. That may be simply answering a robo-call every other day to verify you're still upright, sending a text message one a week, or whatever.
The companies monitor, and a lack of response(s) can trigger a welfare check.
There is no need to leave an animal to waste away and suffer with so many cheap and simple solutions.
--Duck911