Sorry for troubling you all again. Attach below are some pictures of the cactus? Thanks in advance in identifying it.
Yetat, it's not a cactus, but a type of Stapeliad. It's possible it is an Orbea...maybe O. variegata, but it's impossible to tell without a bloom. If/when it blooms, post a pic & we'll take another stab at it! :) It could also be a type of Huernia or Caralluma...to give you a couple other to consider. ;)
Thanks for all the valuable inputs into this threads! I guess the most trusty way if to wait for it to blooms for ID. So, just another question normally how long does it take for this particular type of succulent(s) to mature? (Hope it does not take that long as the golden barrel cactus)...