BANGOR, Maine — The Bangor Humane Society shut down early Saturday after it ran out of adoptable animals for the first time in its 164-year history.

The Mount Hope Avenue animal shelter had planned to stay open until 8 p.m. Saturday and be open for six hours Sunday as part the national Mega Match-A-Thon Event sponsored by the ASPCA.

“This far exceeded our expectation,” Suzan Bell, executive director of the Bangor shelter, said Saturday afternoon. “I just want to thank the community for their support. Personally, I am overwhelmed. This is the best day in the history of the Bangor Humane Society as far as I’m concerned.”

The shelter was one of 55 around the nation to receive a $10,000 grant from the American Society for the Prevention of Cruelty to Animals to participate in what was scheduled to be a three-day event. The grant allowed Bell and her staff to lower adoption fees and streamline the process so potential adoptees were matched with pets more quickly.

Bell said she won’t know until Tuesday how the Bangor Humane Society did compared to other shelters that participated in the event.

She estimated Saturday that of the 101 adoptable pets at the shelter as of Wednesday, approximately 50 dogs, 45 cats and a handful of small animals, such as guinea pigs, gerbils rabbits and rats were adopted.

Bell said there was no typical adoptee.

“We saw families, senior citizens, young single people,” she said. “They truly ran the gamut of the community. You name it, they were here.”

The first animal to be adopted was an 11-year-old dog and the last was an 8-year-old white cat that weighed 22 pounds.

The only animals left at the shelter Saturday were strays — animals that have been there seven days or less and are not yet adoptable, according to Bell.