Overview:1. The main fabric of the sniff ball is environmentally friendly polar fleece, which is soft and skin-friendly, environmentally friendly and easy to clean, and supports machine washing2. The sniffing ball is an upgraded version of the traditional sniffing pad, and it is more difficult for dogs to get food. Therefore, the first time a dog uses a sniffing ball, the food should be placed on the edge of the ball where it is easy to find. Knowing that there is food hidden in the ball, you can put the food in the ball to moderately increase