Use the Plaguehound Leash near the plaguehound cages at Vengeance Landing and look for clues at the location you're led to by the Plaguehound Tracker.
Provided Item:
Description
Now that this rascal's belly's full, maybe he will be more willing to cooperate. Here's his leash, just come get him from his cage whenever you're ready to take him.
I don't know what Anselm expects you to find, but look for clues wherever it is that the dog takes you.
Completion
This scaly scroll is covered in stark painted images. You've a feeling this is the sort of thing the kennel keeper had in mind when he asked you to look for clues.
Gains
Upon completion of this quest you will gain:
Additional Information
