Your dream made me think about snakes that change their skins trough their lives.
All the nasty animals that are going out of your pores might mean that you are getting rid of bad stuff inside you.
Have you started a kind of cleaning process?
Diet, meditation, therapy, forgiveness?
When snakes change their skins they let go the old stuff and in a way they are renewed.
Something like that is going on in your life?
Just my sense of it!