In my previous comment I did not address the question of owner consent for any procedures involving students practicing without direct supervision of a licensed veterinarian. As stated before, if a student is working on a patient/animal without a licensed veterinarian present then the student is the same as an unlicensed practitioner -- which makes a mockery of licensure. And owners need to be made aware that an unlicensed person may be treating their animals. A sign in the office does not equal informed consent.