Watch: Quick-thinking Aussie teens save kangaroo stuck deep in mud flats up to its neck

A pair of Aussie teens have got their hands dirty in a spur of the moment rescue mission to save a kangaroo stuck deep in mud flats on the outskirts of Sydney.

Jack Donnelly and Nick Heath, both aged 19, were riding their motorbikes near the Nepean River yesterday when they came across the marsupial wailing in distress and stuck in the mud up to its neck.

Unfortunately the roo couldn't be initially reached by the teens, so they went home quickly to grab rope, Nine News reported

Arriving back to the stranded animal, Nick Heath ventured out into the mud flat with the rope tied around him to where the kangaroo was partially submerged.

"You got the cargo," Jack Donnelly can be heard as he films the rescue effort.

After extracting the kangaroo, Nick can be seen holding and patting the exhaused creatrue.

"The roo's life was important to us so we went out on an arm and leg and got it," Nick said.

"We think he went searching for water there and it was really muddy so he got himself really stuck.

"It's a pretty patriotic thing to do and we're proud of what we did. If we saw something like that again, we'll do it all over again."