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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Arthur Simpson-Kent, 48, admitted killing Ms Blake and their sons according to his lawyer.
Two brothers have been arrested on suspicion of murder after their parents were found dead in their own home over the weekend.
The first man to be convicted of murder on the basis of DNA evidence should be moved to an open prison, according to the Parole Board.