I wonder if kids can be civilised?
Pup, who is a gentle boy and not usually aggressive, has just bitten his brother, leaving a nice ring of toothmarks. And lied about it in the face of this incontrovertable evidence. No-one else in the room, and there's no way Tigs can have bitten his own stomach.
What do you do with them?
Postscript: Pup has just said very sadly "I'm sorry I bit Tigs. I'll always be sorry". Learning about remorse at the age of 7!