Hey @Jea !
After doing some digging I have found the following USA suppliers that would be suitable for your pet business below:
The pet supplies market is massive and by carving out a sub-niche for you, an online business could be highly profitable. Did you have any particular dog-related products in mind? If you’re going to dropship and sell pet products online, it’s important to choose a product that’s competitive. Ideally, you’ll want to identify an emerging trend or a new twist on an old favorite in order to carve out your own little segment of the market. Here is a great blog post that analyses the pet product trends in 2021 which can help you find your winning product.