Welcome to Frog Forum will.

It looks like he/she is a Ceratophrys Cranwelli. A very cute one at that.

Just to let you know. Your 75 watt night light is too strong and can possibly burn your frog. It is a good wattage for the tank size you have, but I assume that it is about 12" above the substrate sitting on a screen to yes? You don't want to go higher than 50 watts. If it were hung slightly higer from a lamp stand it may not pose as much of a threat. You also want to use a lamp that has a dimmer switch so that you can accurately control the amount of heat and light coming from the bulbs you use.