Aww i would have thought it was a dumpy white tree frog but i'm not sure, Im getting a WTF and that about it climbing on your shoulder is so cute! I would say if you were going to keep it you would have to but at least a 10 gallon vivarium for it. But i would recommend if it is a frog which you can buy captive bred, do your research and buy a captive bred one
It is very cute and i must admit I wouldn't be able to say no to it! Good luck