1. Safety question: If children keep snakes in the dormitory, are there any safety hazards, such as whether snakes can easily escape or attack others? If there is such a risk, then parents should probably tell the counselor.
2. School rules: If the school explicitly prohibits keeping pets in the dormitory and it is against the regulations for children to keep snakes, then parents should communicate with their children and abide by the school rules. If the child doesn't realize this, then parents can contact a psychological counselor to find a solution.
3. Children's autonomy: If children have their own autonomy and right to raise snakes and have no influence on other students, then parents may not need to tell the counselor.
4. Counselor's responsibilities: If the child's behavior causes other students' dissatisfaction or fear, then parents can communicate with the counselor and let the counselor intervene to help solve the problem.
Generally speaking, this is a decision that parents need to decide on their own after weighing various factors. But in any case, parents and children should respect the rules of the school and maintain the order and safety of the school.