Someone has bought my neighbor's house.

This is Mrs. Shannon's house, my cat Jill's previous owner who died a few months ago. I don't know when they're moving in or who they are, but now I have to worry about talking to new people.

Is there some kind of protocol for this type of situation? Do I introduce myself? Do I wait for them to introduce themselves? Do I get them some kind of welcoming present? Do I just hide from and ignore them? Cause I can totally do that last one.

I'm also a little worried that Jill will see people over there and try to go back. What if they have a dog? Or a kid who tortures animals for fun? Or an adult who tortures animals for fun?