Searching for survivors: The dogs worked around the clock in the vain hope of finding anyone still alive at the World Trade Center site
Scout and another unknown dog lie among the rubble at Ground Zero, just two of nearly 100 search and rescue animals who helped to search for survivors
Tuff arrived in New York at 11:00 pm on the day of attack to start working early the next day
Red, 11, from Annapolis, Maryland, went with Heather Roche to the Pentagon from September 16 until the 27 as part of the Bay Area Recovery Canines
Merlyn and his handler Matt Claussen were deployed to Ground Zero on September 24, working the night shift for five days
Moxie, 13, from Winthrop, Massachusetts, arrived with her handler, Mark Aliberti, at the World Trade Center on the evening of September 11 and searched the site for eight days







