green tree frog, cane toad, kookaburra—all lower case. But German shepherd, French poodle.

one word

nanosecond, nanotube—all one word, no hyphen

naught means nothing, nought is the numeral zero

a naval officer

but Middle East

agent of retribution

racked with pain, rack and ruin, rack your brains... wrack is seaweed

'the' is part of the name and can't be dropped, but it can be lower case, unlike The Hague, where it must always be capitalised.

we use the internationally adopted spelling 'neuron' to describe nerve cells, not the British spelling 'neurone', although in Motor Neurone Disease the British spelling has become more common, so complete consistency is impossible.

but none the less

The Age, not 'The Age newspaper'. In passing reference drop the definite article: '...was reported in today's Age and Sydney Morning Herald.'

Aboriginal group of the Australian Western Desert

are capitalised .. the Iron Lady, Alexander the Great

the pollsters

surprising how often this crops up on our site...

Nobel peace prize, Nobel prize for literature, and so on

but nevertheless

largest Indigenous population in Western Australia

one to nine in words, 10 onwards in numerals. Numerals also for hundreds and thousands (400, 5,000), words for millions and billions (2 million, 7 billion). And for any size number at the beginning of a sentence, spell it out in words: (Forty people died.)