In article , ] says...
Can anyone please tell me what creature leaves black faeces on our lawn?
The stools are about 4cm long x 1cm diameter, sometimes quite dry
sometimes resembling thick tar. We haven't removed the faeces before
mowing the lawn so would the grass cutting be OK on the compost heap?

Probably hedgehog. It sounds just like the dung produced by our
hedge hog, which seems to have just woken up. We put our grass
cuttings on the compost with no ill effect.

Gill M