A hero border collie has helped save a flock of sheep as bushfire tore through farmland and was closing in on her and her owner.

Cath Hill, from Corryong in Victoria, took to social media to share the heroic story of how Patsy the border collie helped save their sheep as the flames approached.

'Allow me to introduce Patsy the wonder dog,' Mrs Hill wrote.

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Patsy the border collie (pictured) is being hailed a hero after saving a flock of sheep from bushfire despite it burning through farmland and moving ever closer toward her

'In the early hours of 31 December 2019, while fire in Corryong was bearing down ... she and my brother rounded up the sheep and brought them to the safest paddock on the farm.'

Patsy helped herd the flock of dozens of sheep across fire-scorched paddocks in thick smoke.

All the while, a raging bushfire just on the edge of the property was getting closer and closer.

After moving the sheep to the safest paddock, Miss Hill's brother turned his attention back to the bushfire closing in while Patsy watched over the flock.

'(She) found a safe spot while my brother fought the fire with a tractor and a tank of water,' Miss Hill continued.

'Almost all sheep are safe, along with the hay bales and silage, the shearing shed, and both farm houses.'

Patsy was able to corral the sheep (pictured) into the safest paddock on the property in Corryong as fire continued to threaten the rest of the property

Miss Hill posted a short video of Patsy after she had finished rescuing the sheep and was resting in a scorched paddock.

'Hey Patsy, you hear those sheep? That's all your work,' Miss Hill tells Patsy in the video clip.

'Well done.'

One image showed how close danger was with Patsy in the foreground at the edge of a paddock while flames burn in the background.

The video immediately caught the attention of other social media users who were quick to heap praise on the hero dog.

'Double smackos for Patsy and tummy rubs,' one user wrote.

After corraling the sheep Patsy took a rest in a fire scorched paddock but kept a vigilant eye on the flock (Patsy pictured with sheep flock in the background)

'What a good and brave doggo,' another added.

'Patsy the Wonderdog! What a legend. That day she really was man's best friend. Fantastic! Hope you are resting and settling in at home,' a third wrote.

The area is still under threat from bushfire with reports on Tuesday afternoon indicating just 10km separates the Corryong bushfire from one over the border.

Temperatures are forecast to increase by the end of this week and have the potential to increase fire activity just north of the Victorian township.

However as of Tuesday the area saw some reprieve with the help of milder weather conditions and light rainfall.

Firefighters have been able to slow the spread of fire as a result but residents are warned conditions can change and to keep an eye on fire alerts.