These things are true Monsters. I found one several years ago in a parking lot about the size of a half dollar looking very ill. So of course I had to take it home and rehab it. It got better, and bigger, and meaner, very quickly. It started getting aggressive about the size yours is now. Once it got about double yours' size, it was almost impossible to handle. They can snap up and over their back almost the length of their body in the blink of an eye. Very cool animals, but also mean as mean can get! Youll need a pond to keep it long term. Mine destroyed an Oceanic glass tank, scratched it all up with its claws. I should also mention, they have an insatiable appetite. Bottomless pits.