Welcome, Hannah! One of the nice things about SDN is that many members are willing to share the info they have gathered about various programs/aspects of the application process so that every individual who has a question like yours does not have to read through 28+ websites 🙂 If your query does not come up in a search (which you should use before posting), senior members and/or masters of the search function can often help find something. In your case, I'm guessing you haven't had many responses since there might not be any threads containing an up-to-date list of DVM/PhD programs. So, let's start one here!
Schools with dual DVM/PhD programs:
Colorado State
Cornell
UC Davis
Louisiana State
North Carolina State
U of Minnesota
U of Pennsylvania
Tufts
Virginia-Maryland
If anyone has any others, please add 'em to the list.