They range in age from 4 weeks to about 8 months. None of them will take a dust or dirt bath. Instead they wallow on grass. Every. Single. Time. They're happy and having a good time, but. There's dirt out there, of various kinds. They have access to all of it. They walk otu of it to roll around in the grass. I keep telling them they're not horses, but they aren't having any of it. The freaks.