Yukihiro Fukuda / Feral domestic rabbit (Oryctolagus cuniculus) standing on hind legs on coast, Okunojima Island, also known as Rabbit Island, Hiroshima, Japan.

Nick Upton / Feral horse (Equus caballus) walking on a remote sandy beach, near Arta, Mallorca, Spain, August.

Steven David Miller / Long-nosed potoroo (Potorous tridactylus) feeding on bird seed fallen from bird feeders which encourages them to come out into open woodland. Fences around the property protect them from feral predato...

SCOTLAND: The Big Picture / Feral sheep with Galtachan islands behind, Shiant Isles, Outer Hebrides, Scotland, UK. June 2018

Cyril Ruoso / Feral Horses (Equus caballus) gathering around waterhole, Namib-Naukluft National Park, Namibia.

Carol Walker / Two wild pinto Mustang stallions battle for dominance in Sand Wash Basin, Colorado, USA.

Carol Walker / Two wild Mustang stallions fighting in the White Mountain Herd Area, Wyoming, USA. August.

Anup Shah / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) female grooming a domestic dog. Jodhpur, Rajasthan, India. March.

Fiona Rogers / Southern plains grey langur / Hanuman langur (Semnopithecus dussumieri) female grooming a domestic dog. Jodhpur, Rajasthan, India. March.

Aflo / High angle view of cat and its shadow, Hiroshima, Japan.

Sam Hobson / Peregrine falcon (Falco peregrinus), juvenile in flight with remains of feral pigeon. Bristol, UK. July.

Sam Hobson / Northern goshawk (Accipiter gentilis), recently fledged juvenile with feral pigeon prey. Berlin, Germany, July. Nominated in the Melvita Nature Images Awards competition 2014.