what animal reptile,mammal,fish,amphibian can fit in a 3 gallon tank?

i dont know what can i fit in a 3 gallon tank but i cannot find any catterpillars in any shops lol so i decided to ak some questions thats why i love to explore about animals cause i've been seeing animals and when i try to stop them i dont even know their language so i also want to learn language of the animal u are talking about in the answer.it is really a waste of money so can you help me.

An Villain6 years ago
Dimensions of tank? (Length X Width X Height)
lemonie8 years ago
You're in Dubai? What about some kind of rodent, like your picture? L