Right now there are 196 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Sports & Outdoors › Fan Shop › Pet Gear. These are inspected returns and open-box items that Amazon sells and ships itself. WarehouseHunter puts each one next to its current new price, so you can see what you save at a glance.
Brands with the most offers here: Littlearth, Pets First, All Star Dogs, BUFFALO, Parisian Pet, Allen, Buckle-Down, Cotton. Every item is a one-off, so the stock moves all day and new deals keep arriving.