Jeremy Boyden, 23, was found dead on Thursday after disappearing in Dargo with his pet dog, Rocky the Jack Russell. Credit:Jenny Boyden

Missing for six nights in Victoria's high country, Jeremy Boyden has been found dead after rescuers were alerted to his location by his loyal dog, Rocky.

The death of the 23-year-old, from Ferntree Gully, is a second tragedy for his family, less than three years after his only sibling, older brother Chris, died in a motorcycle crash on Melbourne's West Gate Bridge in November 2016.

Their distraught mother, Jenny, told The Age on Thursday she wanted to get the message out encouraging young men to seek and accept help when they need it.

She is going through what no parent should go through for a second time, the untimely death of a son.