New to the forums, but I did a MSc at a veterinary college in Canada.
Graduate school can be either terrible or amazing, and is most often a combination of the two. For me, I had an amazing supervisor and co-supervisor but even then you can't escape academia politics. I also made some really great friends. However, going into research with no prior experience is not advised at all in my opinion.
Just because you have a DVM does not make you any more qualified for research than someone with a BSc (North America). In fact, you're honestly still on the same playing field as them, maybe even less so because they haven't been hand-fed the past four years. That has been my experience working with DVM students while I was in graduate school.
That said, being a DVM does provide you with an upper hand over a BSc - if you know how to use it! The breadth of knowledge you bring gives you such a solid foundation. However some people come in with their eyes solely on equine research, or dairy research et cetera. The true potential of veterinary researchers comes from translational research (either animal to human, or animal to animal). Veterinarians are very fortunate because of the information they have collected over the past century that has been ignored by human physicians. Now they can collaborate or independently act towards very powerful investigative medicine.
At the same time, do not mark your experience by the number of publications you make. Yes, these are incredibly important if you wish to become a PI yourself. But they are not what makes you a great scientist. While it doesn't seem like it, you can make a big career or at least a stable career as someone who never publishes in Science, or Nature. Heck you don't even need to publish in the highest impact journal of your specialty.
Now if you were going into research to do basic science and not anything translational then you do not need a DVM. If you want to be tangentally attached to research as a clinician then you do not need a PhD. The strength of DVM/PhD's is their ability to do translational research. There are other benefits for agriculture as well, but many of those are niches that can be filled by animal scientists.