> While these barriers are usually effective for cattle,[23] they can fail due to ingenious animals. Sheep searching for food have been known to roll over grids, jump across them, step carefully into the spaces[24] or run along the side of grids as wide as 8 feet (2.4 m).
The very next video youtube suggested shows two sheep, surrounded by lush green fields, climbing onto steep, wet rocks on a hillside in an attempt to reach some grass in the middle of the rocks. One of the sheep falls, presumably to its death or at least to a significant injury. They may be clever, but they seem... dumb.
Thanks. I only included the wikipedia link for clarity due to the different terminology used across the world. But its interesting to know that what I saw is not as unusual as I thought.
> While these barriers are usually effective for cattle,[23] they can fail due to ingenious animals. Sheep searching for food have been known to roll over grids, jump across them, step carefully into the spaces[24] or run along the side of grids as wide as 8 feet (2.4 m).
[24] https://www.youtube.com/watch?v=5rIbZWblPaA