A Mandurah dog owner has been ordered to put down his American bulldog after it attacked his 92-year-old neighbour in a "life threatening" incident earlier this year.

Graham Schultz, 40, did not appear in the Mandurah Magistrates Court on Tuesday, where the dog's history of aggressive behaviour was broken down.

The dog outside the property earlier this year. Credit:Tex Reeks/Mandurah Mail

City of Mandurah representative Adam Watts told the court the bulldog attacked another dog when it walked by the Falcon property on a lead with its owner, on March 20, 2018.

The dog received puncture wounds to its leg and chest.