The way you stated how you were walking around with notes about PE, aortic dissection, etc...and it irked you a "vet tech" would call herself a nurse is what made me reply the way I did.
To address many of your further comments from above, you stated vet techs do not receive degrees in animal nursing is not true either. MANY vet techs are often pre-vet students majoring in animal science or some other science-related degree. MANY also go to a 2-year school for veterinary technology, so yes, they DO go to school for vet "nursing". In fact, those who go the pre-vet route take classes such as animal anatomy & physiology, 2 years of chemistry including Biochemistry, immunology, cell biology, developmental biology and many other advanced sciences most RN's will never have to take in their career. Many vet techs are also licensed or certified. Google it. Now, every single one may not be because many vets will offer on-the-job training, but most of these people take their professions very seriously and don't take too kindly to someone downplaying their knowledge, education or experience.