Israelis walking on the streets of Tel-Aviv have recently found themselves bumping into pink styrofoam sheep in squares and parks across the city.

The sheep will be moved three times a day to different locations, to try to cover most of the city over the next 10 days.

The 50 pink sheep are part of a 10-day campaign to boost the spirits of Tel-Aviv residents and promote positivity.

Organizers of the "optimisheep" campaign say their flock of styrofoam sheep is simply meant to a smile to people's faces.