Black, slimy dying grass patches: please help!
My garden is dying and I have no clue what it is or how to fix it. The garden is nothing special, no idea what grass, and the dirt underneath isn't great (stony, rocky, etc.) but it has always been grass before, and now it seems as if it is melting into black, slimey dirty puddles or being eaten away and all that's left is the gooey soul of what used to be there.
I've attached some photos of it.
If there is ANYONE out there who knows what it is please help! I've been searching around but can't find anything similar to it.
We have had a particularly wet summer (Scotland, go figure), and there has been a new puppy in the house for the past few months too, but she goes all over, and not specifically and consistently in these patches.
Thanks for any advice!!