Kristel Richard / Portrait of a rare five-day old Posavina filly hidden by her mother's tail, Lonja, Croatia, August.

Kristel Richard / A group of Pure Arab, Shagya Arab and East Bulgarian fillies running in snow, Kabiuk National Stud, Shumen, Bulgaria.

Kristel Richard / A group of Pure Arab, Shagya Arab and East Bulgarian fillies running in snow, Kabiuk National Stud, Shumen, Bulgaria.

Kristel Richard / UVM Morgan horse filly cantering, at the historical stud University of Vermont Morgan Horse Farm, Weybridge, Vermont, USA

Kristel Richard / UVM Morgan horse filly cantering, at the historical stud University of Vermont Morgan Horse Farm, Weybridge, Vermont, USA

Kristel Richard / UVM Morgan horse filly standing alert, at the historical stud University of Vermont Morgan Horse Farm, Weybridge, Vermont, USA

Kristel Richard / UVM Morgan horse filly cantering, at the historical stud University of Vermont Morgan Horse Farm, Weybridge, Vermont, USA

Kristel Richard / UVM Morgan horse filly cantering, at the historical stud University of Vermont Morgan Horse Farm, Weybridge, Vermont, USA

Kristel Richard / A young wild black filly (Equus caballus) standing alert in the Cincar mountains, near Livno, Bosnia and Herzegovina.

Kristel Richard / Rare semi-wild Hmong horse, filly, standing alert among mares in a dry rice field, Xieng Khuang, Laos.

Kristel Richard / Rare semi-wild Hmong horse, filly, standing alert among mares in a dry rice field, Xieng Khuang, Laos.

Kristel Richard / Two wild Rapa Nui horses/mares, two fillies and a colt drinking, Rapa Nui National Park UNESCO World Heritage Site, Easter Island / Rapa Nui, Chile.