Snakes are creepy and ominous in their dreams.
Snakes are mostly signs in dreams: villains, misfortunes, traps, difficulties, obstacles, broken money and so on.
If you are bitten by a snake, it means that you will be hurt in this respect.
In my dream, your father killed the snake, indicating that your father was involved in the incident and mishandled it. Many snakes came back, indicating that your father's intervention and improper handling led to more troubles in the future.
So it's best not to get your father into trouble.