Eye of the goat!

Today i took the family to White Post Farm, a lovely place with plenty to see, i was slightly confused when my son was screaming at the goats, especially after stroking a snake & wandering around sheep, pigs & a huge bull, when i got home and had time to look at my photo's of the day i realised it may be something to do with the goats eyes, something i'd not noticed before about goats, intreaguing!!