Just brought home a 14 month old filly yesterday. She is quidding (spitting out balls of hay), and I am trying to figure out why. We did the grain test, she isn't spilling grain. I know typically horses don't start dental work until after 2 years of age. Could a yearling need her teeth floated?
One other thing I thought of... The people we got her from were feeding a pretty poor grade hay, (like cattle feed) we have orchard hay. Could the change of hay cause her to do this? Maybe a taste preference issue?