I do not think any of the shelters give Pet Passport documents out and it is always just the local Health Book, although I might be wrong, but obviously these cost money and lots of people have no intention of leaving here, but circumstances change hence anyone who truly loves their dog should start the process as soon as possible (after 3 months with a puppy) and remember to keep the inoculations up regularly or the blood test results are no longer valid.
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"Your dog is your friend, your partner, your defender. You are his life, his love, his leader. He will be yours, faithful and true until the last beat of his heart. You owe it to him to be worthy of such devotion"