As far as I can tell, specialization is increasingly popular. Within the past few years I've dealt personally with vets who specialized entirely in ophthalmolog

As far as I can tell, specialization is increasingly popular. Within the past few years I've dealt personally with vets who specialized entirely in ophthalmology, oncology, and obstetrics. At the same practice as my oncologist there are specialists in cardiology and internal medicine as well. I've also had to seek out specialists in rabbit care, which are surprisingly hard to find (though no vet I'm aware of treats solely rabbits -- usually they're exotic vets often with a "real" specialty in birds).