Having owned a rhino ig for many years... i can easily say they are more a terrestrial species not high climbers like the greens.. basically you cage setup is wrong. You need more ground space so the cage needs to be much wider... i would suggest 4ft long 2ft deep and tall minimum. The bigger the better. Your cage is also too small for thermal zones. 6ft wide by 3ft tall and deep will last you a few years.