You may ask why your dog needs a ball? There are so many reasons for you: 1. A good toy ball can accompany dogs, diverts them from lonely when they are home alone. 2. Playing a toy ball will make your dog smarter 3. A good ball can help clean dog's tooth. Description: Brand new and high quality. Material: Non, toxic natural durable rubber size: 2.8" (7cm) and 2" (5cm) weight: Size 2.8": 4.76 oz (135g) size 2": 1.83 oz (52g) tips: It will increase dog's interest in playing with the ball if you put some food into the gaps of ball. According the study of dogs behavior, dogs might be possessive when there is only one toy. And sometimes dogs like different toys. So prepare 3~5 different toys for dogs will be better for them. We suggest that do not give all the toys to your dog at the same time. After a period of time give him or her another toy. Days later give the former one back to exchange that new one. So this could keep dog's interest of a toy. Caution: Proper supervision is advised when playing with all toys to ensure no accidental swallowing. This toy should be regularly inspected to ensure there is no damage. If any damage is seen the toy should then be discarded. Note: Toy must be larger than the width of your dog's mouth.Package included 1× dog treat ball, note: Please purchase certified products from dingwang. Otherwise, we are not responsible for any other sellers.