This is an example of what worked for me Japanese tree-frogs Italian Crested newts and four Slow -worms . Whites Tree-frog Barking Tree-frog Tomato Frog this set up lasted for two years before the Barking and Tomato died [these were bought as adults and I had kept them in different set up for a number of years previously] and finally my clawed frogs and sharp ribbed newts . If things live in a similar environment then you may be lucky but leopard geckoes need a dry environment compared to a frog . Remember everything eats something, small anolis in a rain forest type set up with Greys and American green's may work as an example but they need plenty space tree-frogs mixed with ground dwelling toads gives you an opportunity.Dont put a water dish in but spray regularly I also kept Green Igs with Cane toads for years with no problems ,and Golden Tegus with Cane toads but they come from the same area so you have a fighting chance .European Green toads with Green Iguanas worked very well. BOMBINAS DONT MIX ,and Cane toads should not be kept with any other amphibian as they poison them. If you are just starting to keep amphibs then just keep them separate till you get a lot of experience![]()