There's been another dog attack in Invercargill.

A mastiff cross dog reportedly jumped out of an open window and latched on to his arm of a courier driver, delivering a package to a property on Anglem Street.

He's in hospital awaiting surgery.

City Council spokesman says John Youngson says the owners have already put down the dog.

But the council is considering prosecuting the owners.

It follows two women being seriously injured after a dog attack in the city earlier this month.