The Epping Forest MP argued that new laws would have "very little effect" on responsible dog owners but would make life "very difficult" for those who do not look after their dogs properly.
"It is very difficult to absolutely prevent someone from taking their own life, but that is not to say that the issue is not taken very seriously, " he said.
"Given the many factors that together made life more difficult for the industry in 2012, it might not be surprising, but it is still disappointing that the income figures have fallen back from last year's highest-ever position, " said Mr Lochhead.