I wanted to mention we got our Emys Phayrei in 1996 and it grew up with our redfoot tortoises. I had a friend who free ranged his Phayrei on a large property sectioned off with railroad ties to create pens. He had Yellowfoots and they got along fine. I never witnessed agression between the breeds but just let that be the deciding factor. Due to the size difference in adults you would want to house them separately if the agression thing is an issue with your tortoises.......Good Luck Richard

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Richard -amazoa-

"Changes in behavior occur when the pain of staying the same outweighs the pain of change."