The state of Virginia has state legislation which prevents counties and cities from creating breed specific laws.
D. No canine or canine crossbreed shall be found to be a dangerous dog solely because it is a particular breed, nor is the ownership of a particular breed of canine or canine crossbreed prohibited.
VA Code Ann. § 3.2-6540
C. No canine or canine crossbreed shall be found to be a vicious dog solely because it is a particular breed, nor is the ownership of a particular breed of canine or canine crossbreed prohibited.
VA Code Ann. § 3.2-6540.1