To utter a sharp, quick cry, as a hound; to bark shrilly with eagerness, pain, or fear; to yaup.

a sharp high-pitched cry (especially by a dog)

bark in a high-pitched tone; "the puppies yelped"

Yelp is an internet company based in San Francisco, CA. Yelp hosts a website database of user reviews, mainly of restaurants and stores, but also of medical providers, automotive services, cultural venues, professional services, other websites, and the like. Humorous entries for subjects as diverse as ex-boyfriends, beer, squirrels, sleepwalking, and tater tots can also be found.

To boast.