Ole Jorgen Liodden / Heartsease / Wild pansy (Viola tricolor) flower, Norway, May.

Claudio Contreras / Tricoloured heron (Egretta tricolor), Guerrero Negro, Vizcaino Biosphere Reserve, Baja California Peninsula, Mexico, May

Petra Wegner,Petra Wegner / Cavalier King Charles Spaniel puppies aged 7 weeks, with tricolour and blenheim colouration, on hay bale in straw

Petra Wegner,Petra Wegner / Cavalier King Charles Spaniel puppies aged 7 weeks with tricolour and blenheim colouration, in basket in straw

Petra Wegner / Large group of Cavalier King Charles Spaniel, puppies, three of which have tricolour coat and the rest blenheim

Petra Wegner / Cavalier King Charles Spaniel, five puppies in basket, one with tricolour and the others with blenheim coat

Petra Wegner / Cavalier King Charles Spaniel, male puppy with tricolor coat , aged 3 months, at garden fence

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 puppy, tricolour, 5 weeks.

Wild Wonders of Europe / O. Haarberg / Wild pansy (Viola tricolor) flower, Stockholm Archipelago, Sweden, June 2009

Petra Wegner / Jack Russell Terrier, puppy bitch, 4 month, sitting with back legs splayed

Jane Burton / Basset Hound, sleeping upside down with ears spread