// Jim, if you give a pet the same legal status as a child for the purpose of theft could it have unwanted consequences such as no longer being able to have a very sick, suffering [pet] put to sleep ... //
I suppose it depends on how the new law would be implemented and drafted. Presumably you could copy the text of laws related to kidnapping, including the max sentence, etc, without specifying that an animal is legally treated as a child for these purposes.
I don't want to pretend that I've thought this through thoroughly, though.