So, it's hard to find good gear that's long lasting and durable when you have a pit bull. That said, please check out the following places below where you can find awesome gear!
Where can I buy a weight pull harness?
There's a couple different places where you can buy a weight pull harness, the ones listed below are ones that I have personally dealt with and highly recommend.
Where can I find or buy really heavy duty dog collars, leashes, spring poles, weight pull sleds (aka drag sleds), toys, tugs, harnesses, and more?
I highly and only recommend Shack's Working Dog Supplies. Quality gear for a good price, and good people.
What's the best dog food brand to feed my dog/where can I buy it at?
There's not a best brand, per-say, but any thing high quality will be just fine. A few recommended brands have been listed below:
http://www.diamondpet.com/ (you can find this brand at Tractor Supply Company)
http://www.tasteofthewildpetfood.com/ (you can find this brand at just about any pet store as well as Tractor Supply Company)
4Health (they do not seem to have a website, however you can find their food at Tractor Supply Company or at a regular pet-store)
Other (brands I do NOT consider high quality, but still OK, depending on your budget and what you're looking for):
What's the best place to buy hog dog cut-gear for dogs?
I highly recommend Southern Cross Cut Gear. Awesome gear!
Where can I buy the best first-aid dog kit at?
Ready Dog has some great kits, highly recommend them.
Where can I buy game dog/pit bull apparel at?
The best place I've found so far is Scratch Dog Designs.
Where can I buy a good dog coat at?
We highly recommend Country Dog Coats. They make extremely high quality and heavy duty coats for dogs. They even make reflective ones. I like them too because a percentage of each sale goes to benefit a good cause.
Where can I buy a dog-backpack at?
Ruffwear is probably the best place for back-packs, in my opinion.