This is another good reason to socialize. Everytime I see a person with an unsocialized pet, I think "what if they are in the hospital and somebody has to care for the pet?". My aunt watches her neighbor's dog sometimes, and she has to sit for an hour to get it to come near her to go outside and if you make sudden moves the dog will bite out of fear. If this older woman dies and her dog is left, nobody will want to take it, it will probably be put down. And the dog isn't even a year old yet.