Knowing that there are 12 million homeless pets in shelters in this country has motivated Zack and Thomas to be part of the solution to the homeless pet problem. When Zack turned six, he asked his friends to bring pet food to his birthday party in lieu of gifts for him. It was so successful that he has continued to do this every year for his birthday. Thomas soon asked his friends to bring pet food for his birthday parties also. Together, Zack and Thomas have donated more than 1,000 pounds of pet food to local animal shelters and have won many awards for their efforts. As Thomas says, “It isn’t how small you are, it's how big your heart is.”
In 2006, Zack earned the President’s Volunteer Service Award for his hours spent helping homeless pets. They both earned the President’s Volunteer Service Award in 2007, 2008, 2009, 2010 and 2011.
In July of 2008, Zack and Thomas were honored to be chosen by Disney's Wondertime Magazine and the nonprofit Points of Light Foundation as Grand Prize winners in the "Littlest Volunteers" contest. The Mayor and City Council of the City of Milton declared October 6th "Zack and Thomas Adopt a Shelter Pet" day and awarded the brothers with an official Proclamation.
In 2008, they were awarded the "Shining World Compassion Award" in recognition for their efforts.
Zack was named the middle school State Honoree in "The Prudential Spirit of Community Award" program, which is the United States' largest youth recognition program based exclusively on volunteer community service. The Mayor and City Council of the City of Milton declared March 16th as "Zack Eller Day" and presented him with an official Proclamation.
Zack was awarded the 2009 Young Hero of North Fulton Award from the Roswell Rotary Club and the Teaching Museum North. He also received the DAR Citizenship Award.
Zack was a finalist for the 2010 Humane Teen of the Year Award. He received an Honorable Mention for his exceptional contributions to animal protection from the Humane Society of the United States. Additionally, he was the local store winner in the Kohl's Kids Who Care contest.
The City of Milton, on October 17, 2011, awarded Zack and Thomas with a Proclamation for their continued work on behalf of homeless pets. The Mayor and City Council of the City of Milton dedicated October, 17 officially as "Zack and Thomas Eller Adopt A Shelter Pet Day" in the City of Milton.
Zack was awarded the 2012 Mariel Hannah Humane Hero Award from the Atlanta Humane Society.
Zack is a 2013 Teen Life Teen Leader and was chosen by 11Alive as the 11Alive Kids Who Care winner for 2013.