Is it okay to house same sex savi's together and how about some 2 foot savi's with say a 5 foot croc monitor? Have any of you had success with this kind of grouping, or would the croc eat the little guys? I have a HUGE enclosure, 4 foot by 20 foot by about 10 feet high, I know, it's long and narrow, but do you think this is enough space for them to leave eachother alone? Thanks.