Pa anifail sydd â'r tafod hiraf? Dr. Hefin Jones o Brifysgol Caerdydd sy'n ymuno ag Aled. Which animal has the longest tongue? Cardiff University's Dr. Hefin Jones joins Aled. Show more
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Pa anifail sydd â'r tafod hiraf? Dr. Hefin Jones o Brifysgol Caerdydd sy'n ymuno ag Aled. Which animal has the longest tongue? Cardiff University's Dr. Hefin Jones joins Aled. Show more
Ail wasanaeth BBC Radio Cymru sy'n cynnig sioe frecwast bob bore'r wythnos.
