When my cats are home alone, if someone drives up and opens their car door, they get inside. They also leap into moving strollers (with babies inside). Who knows what theyd do if someone came to the door (sigh)
Squirrel: I'm sorry to bother you but the bird feeder is empty. (A squirrel, my mother named Petey, once got on the porch railing and rang the doorbell because he wanted some peanuts!) Now I call all squirrels, "Petey"