Teleborian
In the swiss alps many sheep's are protected by "herd protecting dogs". For that a map exist.

http://www.protectiondestroupeaux.ch/faq-was-tun/um-zu-wissen-wo-es-schutzhunde-hat/

In my opinion its an important information for hiker especial for hiker with dogs. I don't belief that it's the righ solution to add this manually.