Toothed

After three days of heavy rain the sun has come out and it's been a lovely day. A walk around the garden revealed everything has much enjoyed the damp and has grown massively! This particular thing with it's odd colours and markings, a map seen from above perhaps or dinosaur skin, has had a battering in the frost but is perking up again and on the move. Can you see what it is yet?
Thanks to Ingeborg for doing the business.