I am selling my Rottweiler rocky, he is very gentle, energetic and great with kids also neutered

I am selling him because I no longer have the most time on my hands as I am a student. So I concluded that he deserves the most time for a loving home as he is a very good house dog, protective and very smart.

You do not need to worry about leaving your kids around him no matter what age. He is harmless to kids and will protect them no matter what.