Sheep Collar Sends Distress Texts: As wolf populations around the world rebound, livestock are nervous — as are livestock farmers. In Switzerland, a biologist has developed a collar that can monitor a sheep's heart rate, know when the animals is distressed and then tweet the farmer that something may be wrong.

Prototypes of the collar, which were conceived by Wolf expert Jean-Marc Landry from the Swiss carnivore research group Kora, employ technology similar to heart rate monitors runners use.

The collars were tested on 12 sheep who were scared out of the wool by two muzzled Czechoslovakian Wolfdogs. Final versions of the collars should be available in the Fall, and could either have a computer chip that sends a text message alert to the farmer or plays a loud noise or sprays a chemical repellent to frighten off the wolf. via BBC