Yes it is some sort of a fungi about the size of a tennis ball.
Sorry you can't see the pictures rowanwitch is it me that has posted them incorrectly?
It's the first time I have tried to post a picture here.
I haven't handled it but did give it a poke with a stick, it is quite hard. I was mainly concerned as to weather it was poisonous to my dogs.
But at the same time didn,t want to destroy it in case it was rare.
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