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Unwanted dogs. 
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12.—(1) A local authority may accept from its owner, or from a person authorised by the owner, an unwanted dog and, subject to subsection (2) of this section, may dispose of such dog or arrange for its destruction in a humane manner. 
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(3) A local authority may, before disposing of a dog under this section, sterilise, or arrange to have sterilised, the dog. 
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