Here is a website with the different sounds a goat makes that you can listen to. They make these sounds for different situations or how they feel. http://www.goats4h.com/GoatSounds.html
A horse can whinny, scream, nicker, and even low growl. When a horse nickers it can mean that it likes something, or when its feeding time, they nicker to there feeders. When it screams it can mean a...
They make a cricket-like sound.
Like a sheep but sometimes lower.
They bleat.