Do Animals have Blood Groups? - a podcast by Dr Chris Smith

Why do we have different blood groups, such as A, B, O and rhesus positive or negative? Do animals have blood groups? If so, are they the same as humans, or do they have their own? We find out in this Question of the Week. Plus, we ask why songs sound better the more you hear them... Like this podcast? Please help us by supporting the Naked Scientists

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