The royal family say they can do without many things, but not their animals. For countless monarchs and their consorts, dogs, cats, horses and even the occasional parrot have acted as constant, faithful companions, unquestioning allies and surrogate children.  With intimate anecdotes and fascinating detail, royal expert Brian Hoey describes the mini palaces provided for the Queen's pampered corgis; Princess Anne's badly behaved bull terriers; the wild animals — including crocodiles, hippopotami and an elephant — presented to princes and princesses; a regal passion for all things equine; and the pigeon awarded a military medal for its efforts in the Second World War.