Kong Stuff a Ball Treat Toy - Small.

Suitable for dogs up to 20lbs (10kg)

The Kong Stuff a Ball dispenses food and treats for hours of fun.
The dental ridges cleans teeth and massages gums.

It's also a good solid ball and being made by Kong you know it's durable.
The toy is about 2.5 inches (6.4cms) tall and is suitable for small sized dogs.