Simon Littlejohn / Adult female European otter (Lutra lutra) guarding and grooming its pup on riverbank as it eats a fish, River Stour, Dorset, UK, September.
Tony Wu / Fringed blenny (Chirolophis japonicus) guarding its eggs. Miyagi Prefecture, Japan.
Theo Webb / Driver ant (Dorylus) large soldier guarding smaller ants, in Salonga National Park, Democratic Republic of Congo.
Jabruson / African elephant (Loxodonta africana) confiscated and recovered ivory tusks stocked and stored at Nagero, Garamba National Park H.Q, Democratic Republic of Congo (Formerly Zaire) No release available...
Neil Aldridge / Young Meerkat (Suricata suricatta) standing on its hind legs near the edge of Makgadikgadi Pans National Park, Botswana, April.
Neil Aldridge / Meerkat (Suricata suricatta) standing and keeping watch while another excavates a burrow in soft sand before disappearing underground for the night. Makgadikgadi Pans, Botswana, April.
Anup Shah / Western chimpanzee (Pan troglodytes verus) female 'Fanle' aged 13 years and protecting her infant son 'Flanle' aged 3 years from an aggressive male, Bossou Forest, Mont Nimba, Guinea. January 2011.
Staffan Widstrand / White rhinoceros (Cerathorium simum) watched by anti-poaching patrol of iMfolozi National Park, South Africa October 2011
Tui De Roy / Great frigatebird (Fregata minor) male guarding single chick. Punta Cevallos, Espanola Island, Galapagos, Ecuador, May.
Dave Watts / Southern cassowary (Casuarius casuarius) adult male with chicks, World Heritage National Park rainforest of the Wet Tropics, north Queensland, Australia
Alex Mustard / 2020VISION / Male fifteen spined stickleback (Spinachia spinachia) guarding its nest (not visible), Shetland Islands, Scotland, UK, June
Alex Mustard / 2020VISION / Tompot blenny (Parablennius gattorugine) in bright summer mating colours, peering out from his home in a discarded tube, where he was guarding his eggs (not visible in this photo), Swanage Pier, Dorse...
Barrie Britton / Male Vogelkop bowerbird (Amblyornis inornata) inspects the decorations outside his bower. Vogelkop Peninsula, West Papua, Indonesia. Picture taken during filming for BBC "Life" TV Series, September 20...