Why do horses go "neigh!" when donkeys "he-haw!"?  And what noize do zebras make?  Just because they look similar, should they sound the same?  Plus, we ask how food alters the smell of your urine... Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Why do some foods make our urine smell?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...