Owners who fail to socialise and obedience-train dogs at an early stage are fuelling "frightening" levels of problem behaviour in their pets, according to the report.
Children should be taught at school how to be good owners in the face of research showing "fundamental" gaps in knowledge about animal welfare, the PDSA said.
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Rain across central Britain with longer, intense downpours with thunder in places this evening. A lucky few will stay sunny and dry.
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Labour plans to cap above-inflation rent rises over a three-year period, if they win the General Election.