continuity errors and other oddities

[sitcomfreak1987]

two continuity errors i noticed,

1) in the episode "break-in", the girls get a guard dog, but rose says she's afraid of large dogs. however, in the episode "questions and answers" the girls get rose a dog named jake who is a large dog.

2) during a 4th season episode, dorothy tells rose that she has known her for over 5 years. however, throughout the course of the show, every other time they gave away how many years they've known each other, it matched up with the show's premiere date, 1985.

and oddity is if you watch the shot of the house when the show comes back from commericals, if you notice, a lot of times, there's a light coming on in a window to the left.