The right way to play flopped quads

Test post really, from early a game last weekend. I'm utg+1.



Checked the flop. turn had utg bet 3x BB, i call (knowing the CO AND BT will fold a re-raise, button re-raises to 8x BB (confused at that point - pocket 10s and he checked the flop too? rockets? straight draw?). everyone calls.river comes, utg bets 3x BB, i min raise. CO calls, BT pushes. all call. knocked out 2 and put the third down to about 7% my stack size. a good night :)
in case you can't see the cards clearly:
Hero: Qs Qd
CO: Ac 8c
BT: Kc Jc
UTG: 4d 4h
Board: Qh Qc Ts 4c 9c