I don't care if this has nothing to do with interval ear training, I just found what this guy had to say about perfect pitch really interesting. I still have no idea if my pitch is actually perfect or not though haha.
At around 50 seconds in, the trumpets go from an F to Bb, back down to an F. This is a Perfect 4th. Subsequently, they split where firsts go to a C, while, the seconds go to an F again, creating a perfect 5th.
List of famous songs to learn musical intervals. Create your own custom lists with the interval song chart maker. A perfect starting point for ear training.
So this site has a variety of different intervals, scales, chords, and some melodies that you can use to help you identify the different names of intervals, notes andmelodies. Also has a perfect pitch trainer to help you work on your inner ear.