At this point charities like the Battersea Dog's Home or Dogs Trust step in.

此时慈善机构如巴特西狗之家或狗协会就介入。

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Clarissa Baldwin, chief executive of the Dogs Trust charity, said the scheme would make "a huge difference".

BBC: Dogs in England must be microchipped from 2016

The Dogs Trust said it saw 83 Staffordshire bull terriers at its Bridgend centre in 2011, rising to 104 in 2012.

BBC: Abandoned Staffordshire Bull Terrier numbers rise

According to the Dogs Trust - which has a re-homing centre in Bridgend - the total number of stray dogs in Wales increased from 9, 482 in 2011 to 10, 230 in 2012.

BBC: Dog microchipping to be compulsory in Wales by 2015