What Type Of Frog Did I Rescue?

[MSon]

So I'm new to frogs and yesterday I purchased a frog that was in a horrible setup, with nothing but a water dish and heat lamp. I was told it's a whites dumpy but after looking at all the pictures it looks way to skinny. It also has a yellowish lime color on its head.? I'll try to post a pic, hopefully its a whites so my setups right, but at the same time I hope not because it's so little. Unless every pic of whites on Google are overweight.