Where can I get an agressive reptile or insect?

You need a tank to properly keep a reptile. They are not that expensive. I just bought a 10 gal at Petland for 28 bucks. Petco sometimes has a dollar-agallon sale. If you just want to get some jollies watching something eat, ask the pet store ppl if you can watch them feed the leopard geckos or the snakes. I used to work at petland and you'd be surprised how many people get a kick out of this :/