Why does my cat follow strangers to my front door?

Question

She follows me when I come home because she wants dinner. But I have seen see follows strangers to my door. For example the meter reader called when I was out for the day and she followed him as well and was asking to be let in.

Answer 1

She wants in and is hoping that this stranger going to the door has a key.

My neighbour's cat sits at my door when her owner is out, hoping I'll let her into mine.

Answer 2

she must think they will let her in

Answer 3

she's probably just checking them out because they are invading her territory.

Answer 4

Your kitty is quite a lady.  Perhaps you should follow her lead and escort your guest' out.  She will return with you if you do.

If she has a tendency to linger, wagging her tail and sniffing the air, gently call her back in.

Many, many, house animals have that character habit.

Answer 5

She is just trying to protect you consider yourself lucky.

Answer 6

curiosity cats are naturally curious.  

Answer 7

she's nosey she wants to see who's new to her territory maybe she's looking after you in her own way.maybe she does'nt like being shut out so long and thinks anyone coming to the door will let her in.