Your problem is that your product(ostensibly pitbull apparel) does not match what you're advertising ("defend the pitbulls").
As far as I can determine, your product/what you're selling, i.e. the entire point of your site is pitbull t shirts or sweatshirts, etc..
A 5-second keyword search gets this:
"pit bull t shirts": 1,600 searches a month
"pitbull t shirts": 1,600 searches a month
"pit bull t shirt": 1,000 a month
"pitbull clothes": 720 a month
That's global, local is less, so it's up to you which metrics you wanna use. By any standard, those are fairly small numbers. However, if you were intent on going after it, there's an exact match .net or .org available, most of the competition is zazzle and cafepress pages that have barely any backlinks, and if you had registered
http://www.pitbulltshirts.org, thrown an ecommerce store on it and done some basic backlinking, you probably could have been in the top 20, if not 10 in a couple of weeks. I've never competed with zazzle, so I'm not sure how much weight their domain-wide 37 million links carries.
You have to know who you're targeting before you build your site. Simply building a site because you want to "defend the pitbulls" means nothing to people. You're selling pitbull t shirts, so target that keyphrase and get a domain that's actually relevant to that.