So I tried searching using the word 'tar' but came up with nothing.
 
The pups and I went for a walk on a trail and I could tell it was freshly tarred - but there were no signs up, etc., so I thought it was fine. 
When we reached the END of the trail - there were ribbons up and signs for people to keep off. 
 
Lucy and Ringo both came home with tar on their feet.  Both have had baths but Lucy is still licking her feet. 
Is this dangerous?