How many gallons and what reptile, amphibian can live in a tank that is 14.38" L X 8.56" W X 5.94" H
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A small lizard or a tarantula. If it is a 10 gallon tank usually a Leopard Gecko can fit into it. But most lizards/ amphibians need climbing space, so really the only thing I can think of that can live in a 5" - 6" tank is a tarantula. Which of coarse isn't a reptile or an amphibian, but if you want something to be in there it have to be that ;)