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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Michael Bond, the creator of Paddington Bear has died at the age of 91.
Theresa May said the number of high rises which have failed fire safety tests has risen to 120.
Theresa May and Jeremy Corbyn face each other in the first Prime Minister's Questions since the General Election.