i Register
In some senses, yelper is marked as UK, US. Watch for register when choosing this word.
noun
One who yelps.
Mr. Longstreth, who can be a bit of a yelper, sang sweetly, perhaps in search of contrast.
The avocet.
A bird, the tattler.
noun
A user of Yelp, an Internet service that publishes crowdsourced reviews of local businesses.