This is the Red Eft Stage of the Eastern Newt. Which is the middle stage of development of three. The other two stages the salamander is completely aquatic while at this middle stage they are terrestrial. They can remain in this stage for two or three years. As you can see by the bright colors also, they are poisonous to predators and after one has tried to eat one of these salamanders they will never do it again. You can see these guys on the moist ground during forest walks as I did with this one.
This was taken in Cortland NY.