"Scent marks" refers to the specific smells left by animals to communicate with others of their species. It's a way for them to mark their territory, find mates, or convey information about their presence.
Sentences with «scent marks»
This normally leaves a small amount of scent marking fluid that other dogs identify one another by. (glandex.com)
However, most reputable experts now believe that dog anal glands serve to scent mark territory and feces. (dogster.com)
And certainly in the case of females, they are more likely to scent mark around the time when they are in heat. (happytailsspa-blog.com)