By David Allan-Petale and Tazli Bowe
One is very big, and the other is very fast.
Either way, a kangaroo in Baldivis near Perth and another near Denmark in WA's Great Southern have made a big impression on people who ran into them in the past few days.
Baldivis resident Campbell Johnston was waiting for his bus early on Friday morning when he spotted a swift kangaroo jumping down Grandis Drive, in a suburban housing estate in Baldivis.
"Natural bush is a good 2km away," Campbell explained. "We did have three roos in the area around two years ago but they were re-located down towards Karnup Road.
This young kangaroo was seen hopping down a suburban street in Baldivis.Credit: Campbell Johnston
"It's hard to say if this was one of those original kangaroos or just another one out on an adventure. I have seen a baby dugite but other than that no other wildlife in this area until Friday morning".
Campbell doesn't usually catch the bus to work, and although thrilled with his brush with nature, he was also saddened that urban sprawl is impacting the kangaroo's environment.
Meanwhile, a very buff Kangaroo was spotted and snapped by photographer William Thomsen, who captioned his photograph on Instagram with "this guy has been working out."
Mr Thomsen moved to Australia from from New York sixteen years ago when he married a local, and said he spotted the giant kangaroo while showing his sister around on a visit.
Mr Thomsen spotted this big fella near Denmark in the Great Southern.Credit: William Thomsen Photography
"It was her first time in Australia and she really wanted to see a kangaroo, and so I took her down to Albany and Denmark, and we didn't see any!" Mr Thomsen said.
"Then we got to a bit of bush near Denmark on the last day we had a bit of a kangaroo hunt and there was this big group of them. Nine or ten ran away but this big guy just stood his ground. We were a bit taken aback. He was huge. He stood right up on his haunches and just stared at us."
Roger the kangaroo made headlines around the world for his workout regiment, which includes crushing metal buckets.Credit: Instagram/thekangaroosanctuary
Researchers from WA's Murdoch university have found male kangaroos develop ripped physiques to attract females and edge out other males.
You may remember Roger the kangaroo, who hit the headlines in 2015 for his 6 foot 7 height and 90 kilogram frame packed with muscles that he used to crush metal buckets with for fun.
But the big guns and pecs come at a cost - muscly male kangaroos tend to have shorter lifespans than their more svelte rivals.
"Dominant males frequently adopt poses which best display their muscularity and size," Murdoch's Natalie Warburton said.
"Under conditions of extreme environmental stress, there is evidence that male mortality is greater, suggesting that maintaining this additional musculature incurs a significant cost."