Identification: any idea what kind of cacti this is?

idk if this 1 flowers or what its still a young i just got yesterday i gave it a few shot glasses of water or half 4 of them its really loving 2 settle in it has attacked me with is spines also the spines look longer when i brought it home it seems very healthy they are nice btw will these guys flower? btw it was dry too dry as a bone sooo in 2 weeks i'll water its 3.5 inch pot