Across the big street near us is a reserve.
Sometimes we go there for a very short walk, or
to start a longer walk.
It is a shortcut for four streets and many people walk dogs there.
The walkway in, has fences on either side for a short distance.
Holly lives on the left side.
She's a border collie.
At first, we would just bark at each other through the fence, then Holly's human cut out a huge 'picture window' for her to see what was happening.
The other day, we noticed some stuff on Holly's window.
When we got close, we saw this: