WEST OZ Wildlife in Karnup is raising the profile of Scoliosis Awareness Month in June.
A video with keeper Beth Mullany and Dexter, who has scoliosis, has gone viral.
The video explaining scoliosis in koalas has had more than 6.3K views on the West Oz Wildlife Facebook page.
Beth said Dexter was the first koala bred at West Oz.
She said he was born with scoliosis and his spine curved to the left.
Koalas born with scoliosis in the wild have a life expectancy of two years. Dexter has lived to 12-years-old.
Beth described Dexter as a sook who preferred human trees to actual koala trees.