Readers have made suggestions on social media on how to rescue the cow:

"Hip clamps and a chopper will do the job in 5 min."

"Send some dogs up she'll come down."

"Tractor with a rope pull her up the hill."

"Farrrrk sakes, surely someone can save the cow! Hopefully this live will get some quick fast action!"

The Whanganui District Council says it's spoken to the SPCA and the animals owner.

But there are fears the cow could fall and break its legs - if it tries to climb down its self.

Wanganui Chronicle reporter Liz Wylie says there's been a lot of erosion on those cliffs recently.

She says one theory is that the cow walked too close to the edge and the land slipped away under its feet.