The term Chiropractor is governed by law and incorporates the right to diagnose. In the UK only a registered veterinary surgeon may diagnose conditions in animals and as such, those who practise chiropractic type techniques on animals are termed animal manipulators or animal spinal therapists. I hope that clears up the confusion on the 'name thing'!
Please note: any form of animal therapy is not a replacement for veterinary care. Please consult your vet before seeking the help of any complementary therapist. This shouldn't be a problem as I am fully qualified and insured.