It struck me recently that many animals love cheese. Leaving aside Homo sapiens, dogs, cats, mice and even fish (it can be used as bait) love the flavour of cheese. The incorrigible mutt in the photo above, Pirate, goes mad whenever I open some cheese in the kitchen; a piece of Cheddar is his ultimate treat. Is the reason known why cheese, and indeed other dairy products, have such cross-genus appeal? I would be very grateful to hear from anyone who might know the reason (but please from a strictly scientific perspective) why cheese and dairy products are liked by so many different species...