He adhered to Rose like a leech, and followed her about like a little dog.
"White Lies" by Charles Reade
This is some practice of thine, thou dog leech!
"The Fair Maid of Perth" by Sir Walter Scott
Now, we have crab-tree, a wild apple-tree; a canker rose, a wild rose; dog rose, dog-violet, horse leech, horse chestnut.
"Notes and Queries, Number 189, June 11, 1853" by Various