Old cartoon I used to watch...?

I remember when I was younger (80's) I used to watch this cartoon about a brother, sister and their dog who are playing with a ball or something and they go through a mirror and end up in another land...it seems like the ground looked like pillows or quilts. And I think one of them turns to stone some how. Does anyone know what the heck I am talking about? I swear it was called snuggles or something. I don't really remember but would love to find it some how.