What do the chimneys on the March Hare's house look like in Alice's Adventure in Wonderland ears dormice or kettles?

The chimneys were shaped like ears. Here is the quotation from the book:

"She had not gone much farther before she came in sight of the house of the March Hare: she thought it must be the right house, because the chimneys were shaped like ears and the roof was thatched with fur."