your dog will have to be microchipped, and then vaccinated against rabies. this will be followed by a blood test approximately 28 days later to insure that the vaccine is working, results from this test can take about 4-5 weeks to come back!! Only when the vet is certain that the vaccine has worked will he issue he dog with its PETS ( Pets Travel Scheme) certificate..costs around £150.00....and, then, to come back into the U.K. you will need to see a vet in Spain for them to issue a certificate to prove the dog has been treated against ticks ad tapeworm, and this test needs to be done at least