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The Nationals deputy leader Peter Walsh said the government is considering amending the Crimes Act to crack down on the owners of dangerous dogs that kill people.
He said owners should be held responsible for their dogs' actions, similar to people charged with culpable driving, he said.
"These types of dogs have lost their right to exist in Victoria," Mr Walsh told reporters on Thursday.
He was speaking after an American pit bull mastiff cross mauled a four-year-old girl to death in Melbourne on Wednesday.
Mr Walsh said the government would remove the current amnesty in place for people to register their unregistered dangerous dogs.
"Those dogs in future will be able to be seized by local government and destroyed because they will be unregistered," he said.
A 'dob in a dangerous dog' anonymous hotline would be set up so people who have dangerous dogs in their neighbourhood can report them.
Mr Walsh said the government would allocate funds to local councils to help them investigate dogs reported to the hotline.
The Victorian government introduced laws in 2005 requiring all pit bulls and other restricted breeds to be desexed, effectively breeding them out of existence.
The restricted dog breeds include pit bulls, Japanese tosas, Argentinian fighting dogs and Brazilian fighting dogs.
A dangerous dogs register to track restricted breeds was introduced in 2006.
Registered dogs must be desexed, microchipped, have a safe enclosure and be muzzled and on a lead when in public, Mr Walsh said.