I have a young labrador collie mix, race conditions already require a lot of exercise and employment. The Kong arrived today and I'm already extremely enthusiastic! The quality is high and keeps the dog teeth without any problems. I put him with a bit of cheese and a few treats for 20 sec. In the microwave, then let abkülen and finally left to the dog. (Hidden He is then when the dog again has to stay longer alone) It took him about a half-hour tongue work until the Kong was empty. Then he has only once slept a few hours. In summer you can freeze the Kong also. I did not think that such a small rubber Knoll would call him such. And with so little effort on my part. That I can only recommend it. Here you will find a few good recipes with ingredients that you always have at home, or even can replace good. [...]