Andy Rouse / Dalmatian pelican (Pelecanus crispus) portrait with different coloured eyes, in breeding plumage, Lake Kerkini, Greece, January.

Mark Taylor / Cocker spaniel bitch resting with Cockapoo puppy.

Pascal Pittorino / Shih tzu puppy (Canis familaris) sitting on grass, Var, Provence, France, July.

Pascal Pittorino / Shih tzu puppy (Canis familaris) head portrait , Var, Provence, France, July

Mark Taylor / Black and white Border Collie puppy, sitting and looking up.

Mark Taylor / Black and white Border Collie puppy, lying with head up.

Mark Taylor / Black-and-white Border Collie pup and Guinea pig, against white background

Lynn M. Stone / Siberian Husky dog head portrait, Connecticut, USA.