The open day was sponsored by Horsham and Stawell Toyota, with the idea initially being to conduct an event in conjunction with Halls Gap Zoo owners Greg and Yvonne Culell, to launch two new Toyota models.

"The idea to do something at the Halls Gap Zoo started as a release for the new model Kluger and Corolla sedan," Mr Galvin said.

"With input from Greg and Yvonne Culell, it snowballed into a family fun day and fundraiser for the local emergency services."

Mr Galvin said the overwhelming factor was that 4130 people attended the zoo on Sunday, which will result in healthy donations being made to the emergency services in the region.

"The emergency services have had a hell of a time over the last few years with flood then fire, so it was fitting to raise funds for these important organisations," Mr Galvin said.

"Our funding of the entry to the Zoo, along with our television advertising of the event, brought a large number of people to the Grampians region, with at least 400 coming from Melbourne specifically.

"I'm really pleased that my business's financial contribution has assisted in raising in excess of $10,000 for the emergency services in the area along with a major boost to the Halls Gap township as a whole.

"I have been told that the number of people seen in town on one day was equal to the Jazz Festival promoted by Grampians Tourism, not a bad effort for two local businessmen organising a day.

"In my opinion the Halls Gap Zoo is the flagship of all the attractions in the area.

"To be able to work with Greg and Yvonne in conducting such an event should assist me in promoting my business as one that is community focused."