Help!!! We just got a new horse last month (he's a standardbred) and he has a strange rattling noise in his throat. It's snowing now and he's just getting his winter coat. He is getting mucous in his nose and I don't know if I should still ride him. My dad says just don't ride him for a wile and it'll go away but I'm still worried. If you know how to help please do, Thanx!!!