Thanks so much! It has two little offsets right now, do you think I could separate them or replant and give it a little bit of time before doing that?

I agree with E. nodulosa. It is looking stressed. It maybe in poorly draining soil, and needs new mix.

The second is a crested Myrtillocactus geometrizans. Mine reverted to normal and died of malignant neglect. Yours is spectular!

Brad

Thanks! I've been calling it squiggly cactus all this time, but I'm glad to know the proper name. The lighter part up top is growth from the last two months just from it being outside in a more sunny spot than before. Hopefully it keeps it up!

Sarah

The offsets could be removed and potted separately (they look large enough) - let them callus a bit (is that what you were referring to as give it a little bit of time ?). But as Brad said, new well-draining mix would be much better. Don't over-water the offsets - while they don't have roots, they can take the water and the stems may start rotting.

Second plant is very nice...

Rina

After looking at the photos, the one I got today looks a little stressed. I'm in Austin, so it's hot as heck down here and I don't know how long it's been outside or how often they watered it, so I was wondering if I should let the plant heal a little in better soil before clipping the offsets.

That may be good idea - after separating, it is recommended to keep the offsets out of strong sun anyway.