Tim Fitzharris / Ruby Beach, Olympic National Park, Washington

Petra Wegner / Three Cavalier King Charles Spaniels, tricolour and blenheim sitting on beach chair, ruby on deckchair. Property released.

Petra Wegner / Cavalier King Charles Spaniel, ruby, running out of the sea wearing a lifejacket / life vest.

Petra Wegner / Cavalier King Charles Spaniels, ruby and tricolour, sitting in snow.

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris), male in flight feeding on flower. Hill Country, Central Texas, USA, August.

Petra Wegner / Five Cavalier King Charles Spaniel sitting, black-and-tan, tricolour, blenheim and ruby coated, sitting in autumn leaves

Petra Wegner / Cavalier King Charles Spaniel, ruby coated, being showered / bathed, in a bathtub. Sequence 6/16. Model released

Floris van Breugel / View of Pacific coastline in fog and mist, Ruby Beach, Olympic National Park, Washington, USA, June 2008

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris) female feeding on flowering Texas Paintbrush (Castilleja indivisa) Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA

Petra Wegner / Cavalier King Charles Spaniel, ruby, sitting portrait

Petra Wegner / Cavalier King Charles Spaniel, ruby, black-and-tan, tricolour and blenheim, sitting in line on beach, panting

Petra Wegner / Cavalier King Charles Spaniel, puppy, 14 weeks, ruby, running on beach with adult in background

Petra Wegner / Ruby Cavalier King Charles Spaniel puppy, 7 weeks

Kim Taylor / Ruby-topaz Hummingbird (Chrysolampis mosquitus) male flying demonstrating how brilliant colours only show when the bird is viewed from the front, Digital composite, Trinidad.

Jim Brandenburg / Ruby-throated Hummingbird (Archilochus colubris) female flying, North America

Rolf Nussbaumer / Ruby throated hummingbird {Archilochus colubris} female feeds at sunflower. Texas, USA

Rolf Nussbaumer / Ruby throated hummingbird {Archilochus colubris} male flying. Texas, USA

Tim Edwards / Ruby Beach at sunset. Olympic NP, Washington, USA

Tim Edwards / Ruby Beach in stormy conditions, July 1995. Olympic NP, Washington, USA

Mark Taylor / Ruby Cavalier King Charles Spaniel pup, Flame, 12 weeks old, with a red rose.

Mark Taylor / Tabby kitten, Fosset, 8 weeks old, sitting with Ruby Cavalier King Charles Spaniel bitch, Star.

Tim Fitzharris / Seastacks silhouetted at sunset, Ruby Beach, Olympic National Park, Washington

Tim Fitzharris / Seastacks silhouetted at sunset, Ruby Beach, Olympic National Park, Washington

Tim Fitzharris / Pond and Ruby Peak, Raggeds Wilderness, Colorado

Tim Fitzharris / Pond and boreal forest, Ruby Range near Crested Butte, Colorado

Alex Mustard / Two Ruby brittlestars (Ophioderma rubicundum) climbing a Symmeterical brain coral (Pseudodiploria strigosa) as it spawns at night in order to feed on the coral eggs, East End, Grand Cayman, Cayman Isl...

Alex Mustard / A Ruby brittle star (Ophioderma rubicundum) feeding on the spawn from a Symmeterical brain coral (Pseudodiploria strigosa), East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Ruby brittle star (Ophioderma rubicundum) climbing on top of a mountainous star coral (Montastraea faveolata) as it prepares to spawn at night, East End, Grand Cayman, Cayman Islands, British West Ind...

Alex Mustard / Ruby brittle star (Ophioderma rubicundum) climbing on top of a mountainous star coral (Montastraea faveolata) as it prepares to spawn at night, East End, Grand Cayman, Cayman Islands, British West Ind...

Alex Mustard / Three Ruby brittlestars (Ophioderma rubicundum) climbing a Symmeterical brain coral (Pseudodiploria strigosa) as it spawns at night in late summer. East End, Grand Cayman, Cayman Islands, British West...

Mike Potts / White-throated hummingbird (Leucochloris albicollis) and female Brazilian ruby (Clytolaema rubricauda) Santa Teresa, Rio de Janeiro, Brazil.

Mark Taylor / Tabby kitten, Fosset, 8 weeks, rubbing against Ruby Cavalier King Charles Spaniel bitch, Star.

Mark Taylor / Tabby kitten, Stanley, 8 weeks, nose to nose with Ruby Cavalier King Charles Spaniel bitch, Star.

Mark Taylor / Tabby kitten, Stanley, 8 weeks, relaxing with Ruby Cavalier King Charles Spaniel bitch

Petra Wegner / Removing grass awn from inside of ruby Cavalier King Charles Spanieldog's ear with tweezers, model released

Petra Wegner / Ruby Cavalier King Charles Spaniel with grass awn sticking out from between toes

Petra Wegner / Ruby Cavalier King Charles Spaniel with grass awn sticking out from between toes

Petra Wegner / Ruby Cavalier King Charles Spaniel with grass awn sticking out from between toes

Petra Wegner / Ruby Cavalier King Charles Spaniel paw, freshly cut

Petra Wegner / Person cutting hair between balls of foot of a ruby Cavalier King Charles Spaniel

Petra Wegner / Person cutting hair between balls of foot of a ruby Cavalier King Charles Spaniel

Petra Wegner / Ruby Cavalier King Charles Spaniel close-up of paw

Petra Wegner / Ruby Cavalier King Charles Spaniel stealing sausage from plate

Petra Wegner / Four Cavalier King Charles Spaniels, tricolour sitting on deckchair, black-and-tan lying on ground, blenheim on chair and ruby in paddling pool

Petra Wegner / Four Cavalier King Charles Spaniels, tricolour sitting on deckchair, black-and-tan lying on ground, blenheim on chair and ruby in paddling pool

Petra Wegner / Four Cavalier King Charles Spaniels, tricolour sitting on deckchair, black-and-tan lying on ground, blenheim on chair and ruby in paddling pool

Petra Wegner / Woman giving water to ruby Cavalier king charles spaniel on beach, Texel, Netherlands, model released

Petra Wegner / Two Cavalier king charles spaniels, black-and-tan and ruby, playing with stick on beach

Sandesh Kadur / Black-crested bulbul (Pycnonotus melanicterus) perched, this crestless race of the Black-crested Bulbul, commonly called the Ruby-throated Bulbul (Pycnonotus melanicterus gularis) lives primarily in t...

Merryn Thomas / Barquentine "Kaliakra", four-masted barque "Sedov" and cruiseliner "Saga Ruby" on the start-line of the Funchal 500 Tall Ships Regatta race, Saturday 13th September 2008. Falmouth, Cornwall, UK

Merryn Thomas / Barquentine "Kaliakra", four-masted barque "Sedov" and three-masted barque "Alexander von Humboldt" lining up of the start of the Funchal 500 Tall Ships Regatta race, Saturday 13th September 2008. Fal...

Merryn Thomas / Spectators aboard "Enterprise" ferry watching barque "Sedov" at the Funchal 500 Tall Ships Regatta race day, Saturday 13th September 2008. Falmouth, Cornwall, UK

Merryn Thomas / Cruiseliner "Saga Ruby" at the Funchal 500 Tall Ships Regatta 2008. Falmouth, Cornwall, UK

Andy Sands / Ruby Tailed Wasp (Hedychrum niemelai / rutilans), a cuckoo wasp that feeds its larvae on the food stored in burrows by other species. London, England, UK, August.

Andy Sands / Ruby Tailed Wasp (Hedychrum niemelai / rutilans), a cuckoo wasp that feeds its larvae on the food stored in burrows by other species. London, England, UK, August.

Andy Sands / Ruby Tailed Wasp (Hedychrum niemelai / rutilans), a cuckoo wasp that feeds its larvae on the food stored in burrows by other species. London, England, UK, August.

Andy Sands / Ruby Tailed Wasp (Hedychrum niemelai / rutilans) approaching the burrow of Cerceris arenaria which it will parasitise with its larvae. London, England, UK, July.

Alex Mustard / Boulder star coral (Montastraea annularis) spawning at night in late summer, showing the onset of the synchronised release of bundles of eggs and sperm with a Ruby brittlestar (Ophioderma iubicundum,...

Stephen Dalton / Ruby tailed wasp (Chrysis ignita) a parasitic wasp, UK

Stephen Dalton / Ruby tailed wasp (Chrysis ignita) a parasitic wasp, UK

Stephen Dalton / Ruby tailed wasp (Chrysis ignita) a parasitic wasp, UK

Donald M. Jones / Ruby-crowned Kinglet (Regulus calendula) male, Kalispell, Montana

Donald M. Jones / Ruby-crowned Kinglet (Regulus calendula) male calling, Kalispell, Montana

Petra Wegner / Cavalier King Charles Spaniel, ruby, 4 years, on right and tricolour, 14 month puppy, sitting portrait, both looking up.

Petra Wegner / Cavalier King Charles Spaniel, ruby, relaxing, curled up on a blanket.

Petra Wegner / Cavalier King Charles Spaniel, ruby, running on beach with a yellow ball in mouth, wearing a lifejacket / life vest.

Petra Wegner / Woman sitting giving treat to Cavalier King Charles Spaniel, ruby, male Model released

Petra Wegner / Cavalier King Charles Spaniel, ruby, male, searching for treat in rolled blanket / unrolling blanket.

Petra Wegner / Woman brushing Cavalier King Charles Spaniel, ruby / brush. Model released

Petra Wegner / Cavalier King Charles Spaniel, ruby, male, sitting portrait.

Petra Wegner / Cavalier King Charles Spaniel, puppy, ruby, 3 months, sitting with toy.

Petra Wegner / Woman sitting with Cavalier King Charles Spaniel, ruby, male. Model released

Petra Wegner / Woman offering treat to Cavalier King Charles Spaniel, ruby, male. Model released

Petra Wegner / Woman sitting holding tissues s with Cavalier King Charles Spaniel, ruby, male with paws on her knees Model released

Luiz Claudio Marigo / Ruby-crowned tanager (Tachyphonus coronatus) perched in Atlantic Rainforest, Serrinha do Alambari Environmental Protection Area, Rio de Janeiro State, Southeastern Brazil.

Luiz Claudio Marigo / Female Brazilian ruby (Clytolaema rubricauda) perched in Atlantic Rainforest, Serrinha do Alambari Environmental Protection Area, Rio de Janeiro State, Southeastern Brazil.

Luiz Claudio Marigo / Brazilian ruby (Clytolaema rubricauda) male perched in Atlantic Rainforest, Serrinha do Alambari Environmental Protection Area, Rio de Janeiro State, Southeastern Brazil.

Nick Upton / Ruby-tailed / Cuckoo / Jewel wasp (Pseudospinolia marqueti) feeding on Cretan oregano (Origanum onites) flowers, Lesbos / Lesvos, Greece, June.

LYNN M. STONE / Ruby meadowhawk dragonfly (Sympetrum rubicundulum) pair in mating embrace known as a wheel, East Haddam, Connecticut, USA, July

LYNN M. STONE / Female Ruby meadowhawk dragonfly (Sympetrum rubicundulum) on emergent Swamp Milkweed (Asclepias incarnata) North Guilford, Connecticut, USA, August

Petra Wegner / Cavalier King Charles Spaniels, ruby and black-and-tan.

Petra Wegner / Cavalier King Charles Spaniels, ruby and black-and-tan.

Petra Wegner / Cavalier King Charles Spaniels, ruby and black-and-tan.

Petra Wegner / Cavalier King Charles Spaniel, ruby, and Alaskan Malamute puppy, 6 weeks.

Petra Wegner / Cavalier King Charles Spaniel, ruby, and Alaskan Malamute puppy, 6 weeks.

Petra Wegner / Cavalier King Charles Spaniel, ruby, going through rubbish

Petra Wegner / Cavalier King Charles Spaniel, ruby, going through rubbish

Petra Wegner / Cavalier King Charles Spaniels, ruby and tricolour, sitting in snow.

Michael & Patricia Fogden / Ruby-throated Hummingbird (Archilochus colubris) immature male feeding on nectar of Porterweed (Stachytarpheta frantzii) flower in dry forest, northwestern Costa Rica

Kirkendall-Spring / Waves crashing at high tide against seastack on Ruby Beach, Olympic National Park, Washington, USA, September 2009

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris), male in flight feeding on Firebush (Hamelia patens) flower, Hill Country, Central Texas, USA, August.

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris), male in flight feeding on Turk's Cap (Malvaviscus drummondii), Hill Country, Central Texas, USA, August.

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris), male in flight feeding on Hibiscus flower, Hill Country, Central Texas, USA, August.

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris), male in flight feeding on Turk's Cap (Malvaviscus drummondii), Hill Country, Central Texas, USA, August.

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris), male in flight feeding on Turk's Cap (Malvaviscus drummondii), Hill Country, Central Texas, USA, August.

Rolf Nussbaumer / Ruby-throated Hummingbird (Archilochus colubris), male in flight feeding on Hibiscus flower, Hill Country, Central Texas, USA, August.