What Cactus is this? [Photo]?

Question

I bought this cactus today, I was just wondering, mainly out of curiousity, if anyone knew the name of the species?

Thanks, here's a pic:

http://i132.photobucket.com/albums/q31/shadysladyangela/PICT1871.jpg

Answer 1

It looks like a cylindropuntia verschafeltii or possibly an opuntia fragilis var. brachyarthra.

Check these links and decide

http://website.lineone.net/~igandjm.robi...

http://www.succulente.info/cactus/opunti...