Microchipping My Dog is Microchipped – How Do I Get My Certificate? Firstly, you will need your dog’s microchip number. Changing Ownership of a Dog If you are buying, selling, adopting or giving a dog to another person you must take the following steps to be compliant with the law: Frequently Asked Questions about Microchipping We have put together a list of the most frequently asked questions that we receive about microchipping. Get Your Dog Microchipped It is now a legal requirement to have all dogs in Ireland microchipped!