There are many toys on the market for dog with many aims. They activity toys, however, are a little different. They are not for chewing purpose, chasing or fetching they are for learned and concentration. Dogs have very active minds and often need more than physical stimulation to stay active. So by providing them with a strategy game they have to learn you can be teaching them a whole new skill. It can take them some time to figure out keeping them entertained for much longer than other standard toys. All activity toys must be used with care, you know your dog best and what his abilities are.
sturdy, suitable for all dogs
stimulates the mind keeps dogs active for longer, helps with concentration
easy to use, however dog may need to be guided and helped to begin with, use your best judgement all dogs are different