I have 2 Cunningham Skinks. sex unknown. STL about 8 and 10 inches. lately the bigger one bit the tail of the smaller one. it did that everytime when i put them in the same cage. they had tongue communication with each other at the beginning. after that the big one bit the tail of small one. and small one tried to run away and looked scared off.

now i keep them in different cages. were they gonna mate? or just fight? i don't know their sex actually.

Please help. Thank you!!