A company called, "Helping Udders" sells a dog toy made from rubber liners recycled from cow milking machines.

The toy is called the "Udder Tug", and it's available in various shapes and sizes.

What makes them irresistble to dogs is that they have the scent of cows and milk all over them, and the rubber composition makes them useful as chew toys.

Pictured here is the variety called, "Tony's Bumper", that has five of the rubber liners attached to a rope. This one sells for $20.00.

Anywhere from 10% to 50% of the proceeds goes to charities, and you get to pick the charity it benefits. The company says that they've donated over $12,000 to charities this year alone.

Visit Helping Udders online at: http://www.helpingudders.com