Allow free movement of domestic animals between Great Britain & Northern Ireland

One of the adverse impacts of the new Brexit regulations on travel between GB & Northern Ireland for dogs, cats & ferrets and the pet owners is that they must have an animal health certificate travelling from GB to Northern Ireland.
As a result of the Brexit legislation It will mean pet owners, guide dog & assistance dog owners who wish to travel with their pets, will incur unnecessary expense and potential to unnecessarily over-medicate their pets
This will have a significant adverse effect on:
•            people who regularly travel back from GB to Northern Ireland with pets to visit family in NI or returning from family visits in GB to Northern Ireland;
•            As a result of these changes Guide Dogs for the Blind are even stopping using volunteer puppy raisers & potentially compromising replacement guide dogs being available to guide dog owners in Northern Ireland;
•            a lot of pet owners enjoy holidaying with their pets & won't be willing to travel here with the new regulations.
•            Northern Ireland championship dog shows which is an enjoyable pastime will become unviable.
•            The viability of field trial events will be questionable.
The EU Commission and UK Government can easily resolve this by allowing free movement of domestic animals between their jurisdictions.