Royal Society of Chemistry podcast time again.
What can you say about a substance that brings us back time and again to a favourite treat, but is poisonous to dogs? We're talking theobromine (literally food of the gods from the Greek), the main active ingredient in chocolate. In fact this close relative of caffeine is poisonous to all mammals to some degree - us included - but you would have to eat a very large amount to suffer. Cats are even more susceptible... but they don't have a sweet receptor among their taste buds, so don't care much. Take a listen and find out more.