In 1937, Disney writer Joe Grant showed Walt Disney some sketches he had done of his Springer Spaniel, Lady. It was inspired by a real dog named Lady. To celebrate its 420th birthday (that’s in dog years, of course), here are 14 things you might not know about this canine classic. Happy birthday to Lady and the Tramp, which turns 60 years old today! That’s about 47 years older than the lifespan of the average pooch, in case you were wondering.