My first own home was an 1850s 2-up-2-down with a small kitchen extension, terraced home. The Warco milling-machine was in the kitchen, the EW lathe, Denbigh horizontal mill and other such were in the very dark middle room, the front room was dominated by my steam-wagon chassis and an enormous drawing-board. The big lathe I had then, lived under a lean-to in the small back yard.
Access to which, and to the back doors of both neighbours, was communal with intervening gates.
Neighbour had a collie – not the place for such a dog, and one very lonely dog when its owner was at work. It would bark and bark at me through the lattice-work gate until eventually I let it in to be made a bit of fuss of. It worked. The dog stopped barking and settled down. Then saw the back door was open (to keep the house cool), and happily trotted in to explore my home.
I didn't mind, just kept on machining away. Until later I went upstairs and found a very unwelcoming "calling-card" on the landing!
Managing not to wretch too much I cleaned and disinfected the carpet.
A week or so later, thinking it wouldn't do it twice…. It did. Exactly the same spot.
After that I placed a stop-board across the doorway (no door) from the kitchen inwards. The collie studied this then turned and gave me such a reproving look.