Trevor Cooper, legal consultant for the Dogs Trust, says this tougher approach should serve as a stiff reminder to dog owners to keep their pets under proper control and to behave responsibly.
He says the new guidelines will encourage courts to focus on the key factors of culpability of the owner and the amount of harm to the victim.
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Muhiddin Mire cut the throat of a stranger at an east London tube station "in revenge for the fight against IS", a court heard.
The significant development came after a forensic re-examination of a palm print left on a getaway vehicle.
Carla Lane was once one of the UK's highest paid screenwriters.