Kong is the leading brand for dog toys that stimulate a dogs mental abilities.
The Kong classic was created to be a fun play toy for dogs. The unique shape means they bounce all over the place. it then evolved into the perfect stuffable toy for dogs.
The hollow shape allows all kinds of food and treats to be stuffed inside. The dog then has to work out how to get the food out. Can they lick it out, do they need to bounce it on the floor to loosen the food. This will make mealtimes last longer, as well as engaging the dogs brain, giving them a mental work out. To increase complexity, pop them in the freezer for a few hours.
They also make great chew toys (under supervision). For the pro chewers, have a look at the Kong extreme.
They come in a variety of sizes to suit every size dog.
Small is perfect for dogs up to 9KG.