Kristel Richard / Wild Chincoteague (Equus caballus) two breeding stallions greeting one another, Chincoteague National Wildlife Refuge, Chincoteague Island, Virginia, USA, June

Richard Du Toit / Common Zebra (Equus quagga / burchellii) grooming one another, Gauteng Province, Rietvlei Nature Reserve, South Africa

Carol Walker / Palomino Peruvian paso mare and foal, Sante Fe, New Mexico, USA