The "mouse" may represent the people you usually contact, or it may be what you are doing.
You can think carefully about which people and things have the characteristics of "rats".
People, names and nicknames are almost the same as mice, and they look the same, but Suosuo's furtive appearance is almost the same as mice.
Things, such as mice, are very troublesome. If you dream of a pet mouse like a golden bear, it is another matter.
The tail may represent the details of an event you encounter. It doesn't seem to matter, but it's getting longer and longer.
Entanglement, which is typical of being bound, bound and uncomfortable.
To sum up your whole dream, someone or something should be bothering you, and you feel bound. Your subconscious thinks that the possibility of this going wrong will make you more and more bound.