For those that haven't been to a pet expo, you're missing out! Various states have fairs and expos catered especially to pets. And many retailers are coming out as vendors at these expos and offering various coupons and specials, as well as free samples.
As retailers (both store, online and mom&pop) are competing for sales, one way to garner exposure is to purchase a booth these expos. Most of the time they'll give out lots of free samples, coupons, while you learn about new products that may (or may not) benefit your pet.
A lot of these expos are either free, donation based, or relatively inexpensive, depending on who is running the event. Not only is a great time to learn about new products, but it is a great day out for any pet lovers. Usually you can bring your pets with you (some require registration/rabies tags) and meet other pet owners and unique dogs. And if you're looking to adopt a dog, many of the expos have adoption centers in attendance....plus you can learn more about specific breeds you may be interested in by talking to both the adoption centers and to other pet owners.
If you've never been to a pet fair or expo, you might be missing out on same fantastic products and deals.