Fox poo or Dog Poo

Hi there, Any help will be greatly appreciated. I live in a small block and have recently received a letter about dog fouling, the whole block got one but mine was hand delivered. There is a problem in the communal garden, I inspected it on Wednesday and picked up alot of poo but have looked this morning, Sunday and there is a lot more. My dog doesn't even go there and I pick all hers up anyway. Can anyone identify if this is fox poo for me please?