(2) Dreaming of the place where I used to live has an image of disgust, which may be caused by the poor sanitary conditions in the community where I used to live. It is also possible that seeing disgusting things at that time caused a strong psychological impression, such as rats, feces, leftovers and so on. These terrible depression are released in sleep.
(3) I dreamed of a female classmate, and I boldly guessed that you must have a contradiction with her. The conflict may be so small that you don't even know it.
(4) I don't know that dreaming about cats may just be a brain association.
(5) It is not aggressive to dream that a puppy pees, but it should be related to sex.
(6) Other images are a bit impetuous.