[Product description]]

1. Principle of high-tech products, non-extrusion voice need not be battery-because of the internal magnetic field and a magnetic ball, when your dog rolling food dropping ball, the magnetic ball cutting magnetic lines of flux generation to utter his voice.

2. Just because of the above principle, only magnetic ball can be cut to magnetic lines of flux, the speed is fast enough, and the power generation is large enough to make sound. Therefore, the dog will find that when rolling magnetic ball in different directions and speeds, the sound size will be different. If the speed is too slow, it may not sound, and some rolling directions may not sound, thus making the dog think, never tired of playing, but also can develop intelligence --- become a smart puppy dog!

3. No dog can be busy with delicious snacks. Put some snacks in the ball. Pay attention to the size of the snacks. They should not be too small. Dogs can eat them easily or too big. They should be crowded inside, the dog can't eat anything. At the same time, it should show a little outside the ball. The strong fragrance seduces the dog and tastes the sweetness again. It will concentrate on digging out the snacks in the ball at 1.1 o'clock!