Wolves have always been a big worry for shepherds, as they prey on sheep, but new technology introduced in Switzerland may help arm shepherd and sheep against these predators. Texting sheep may sound funny, but that's the idea, in a nutshell. What do you think?

A Swiss biologist is developing a collar that can monitor a sheep's heart rate and spot when it is distressed.

The collar will call a shepherd if it spots that the heart rate of an animal has increased for an extended period.

Sheep are increasingly coming under attack by wolves in Switzerland and even those that survive often break fences and run miles as they escape.

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Photo by Tambako the Jaguar