None.
This anime contains no violence.
This anime deals with a bread character who had been burnt.
In episode 3, main character Kogepan tells young bread that if they are being sold, they'll be cut up on a bread board, and toasted again in a toaster.
None.
Bread characters get drunk on milk.
This all-bread cast anime contains no scenes which could be considered scary or harmful to any children. For all ages.