The Petfinder PHP SDK by Brian Haveri allows to communicate with the API to implement animal search features into applications. Brian provides the instructions to download the PHP library, obtain a developer key, and run the code.
Google announced the release of the Google My Business API v4.3 with new functionality such as the ability to read and respond to questions and answers from customers, bulk-read reviews, see unclaimed locations that Google thinks you may own, report issues with GoogleLocations results and more.
Semantic searching can retrieve results that surprise you, hopefully in a good way. So it seems like the natural means for discovery when you dont know what you want to find. Services like Jinni, a semantic discovery engine for movies and TV shows, is the perfect example.