Females often do this. It's a dominance act, not a breeding act. The pictures in the first post look like a female tortoise to me.
Thank you Mark..That is indeed a female sulcata.
I agree female and they should not house 1 male and 1 female together. They can be aggressive and one will bully or the male will try to breed the female to illness or death. They need separate enclosures and only put together for monitored breeding then separated again.
The same for your two aldabras if you see any bullying aggression. Aldabras are not as aggressive as sulcatas can be and Yvonne had two males living together for a long time. So you just need to watch for it where the sulcatas will for sure need to be separated.
How old are they and what size? I got away with this same thing in a giant outdoor enclosure for several years… until the day I didn't get away with it anymore.We have very large Sulcatas living together... 2M and 1F. All happy and no bullying. There are 4 "caves" for them to sleep in and often all 3 sleep together. When I place their large food tray in their paddock, no one ever crowds the others for a spot, but the last one to the tray walks around to find their spot. No one is stressed. Perhaps the secret is providing them with ample room to roam, dig and places to sleep... along with a good diet, as the mix of 2 males and 1 female don't seem to be any issue for them living here together happily in Miami. (We have kept one considerably smaller female, about 10 pounds separate from the 3 big ones until she is of safe size to put with our backyard monsters.)
How old are they and what size? I got away with this same thing in a giant outdoor enclosure for several years… until the day I didn't get away with it anymore.
Understand that this is not ideal, could end at any time, and you'll need three separate enclosures since they can't be kept as pairs.