The owners of killer dogs could face life in prison - a huge leap from the current maximum of two years - under new proposals.
The proposals come as a report published by Guide Dogs in June this year revealed attacks by other dogs on guide dogs are at an all-time high of 10 a month.
Paul Brand reported on an incident involving a dangerous dog in June 2012.
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A number of families were on board the service from London Euston to Stoke. One family left the train early to escape the abuse.
She's called Amy, and was visiting a hospital.