Yes you can cancel your BarkBox subscription at anytime during the subscription and they will stop sending you monthly Barkboxes.
You can also sign up for one BarkBox as a trial and see if you like it and if so you can either continue the subscription or just cancel the monthly BarkBox subscription.
When you sign up for a BarkBox subscription BarkBox will send you a box with a variety of different things in it that include things such as Toys, snacks etc.
Each month BarkBox will ship you a package with a different selection of items for your dog that can consist of a selection from toys, treats, shampoos, bones, bully sticks, hygiene products, food samples, or other canine-related items.
You can cancel your BarkBox subscription at anytime and it's a good thing to have if you can afford to spend the money.
It's basically a surprise as to what you get each month for your dog in the BarkBox but it's all good dog related items that your dog can either eat or use.