This is Jack:
He's one of Tyson's dogs. He is a guard dog entrusted with guarding the family manor.
Tyson would have preferred to talk Jack to London with him, but Jack is his best guard dog so he left him in Jasmine's care. Jack is six years old, two years older than Lily (four) who, in turn, is three and a half years older than Bobby (at this point in time.)