Dewin is Mudiad Meithrin's unique character and he has a faithful dog called Doti. Dewin and Doti can only understand Welsh. Doti does not speak, but she can whisper in your ear in Welsh.
Dewin and Doti live in the Balalŵn up high in the sky and enjoy whizzing down to play with children at the Cylchoedd Meithrin, the Welsh-medium playgroups dotted throughout Wales.
Doti is allowed to go home with a child who has made a special effort to speak Welsh, or has been very kind and has helped others in the Cylch Meithrin.