Police are appealing for the community's assistance as they ramp up their search for missing Timboon woman Ethel.
The 84-year-old, who is also known as Rosie, left her Timboon address sometime yesterday afternoon and may have travelled to the Glenthompson area.
She is believed to have been travelling in a 2010 grey Holden Commodore with registration YGT 150 and is likely to have had her white Maltese Shih Tzu in her possession.
Police and family have concerns for her welfare as she has a medical condition and her disappearance is out of character.
Investigators have released images of Ethel and her vehicle in the hope someone may have seen them in the area.
She is Caucasian with curly grey hair and was possibly wearing blue floral pants and a pink cardigan.
Anyone with information about Ethel's whereabouts is urged to contact Warrnambool Police Station on 5560 1333.