A record number of animals in New York City's shelter system has forced the city to stop taking in new dogs and cats.

Animal Care Centers of NYC says they have more than 1,000 animals across their city shelters.

"We have never had this many animals in our care before. This isn't a drill. This is a crisis," the ACC .

As a result, they have suspended intake, meaning New Yorkers who want to give up their pets can no longer surrender them at an ACC shelter.

"People are surrendering animals to the shelter. One out of every three animals surrendered is because of housing insecurity in New York City. And while our adoptions haven't decreased, they have been pretty flat," said Jessica Vaccaro, ACC Director of Placement.

ACC is still taking in animals that require emergency medical care or pose a public safety risk.

, the ACC urged New Yorkers who are considering surrendering their pets to first ask family or friends for help, , or try to figure out a way to keep your pet.

More resources are available on the ACC's website at .

Animal rescue group urges NYC to fund more spay-and-neuter clinics

The overcrowding is also bad news for private shelters like Brooklyn's Puppy Kitty NYC. They rely on donations to care for their more than 400 cats.

"The ACC closing intake is alarming for us because we'll have more people coming to us, and we're trying to slow down and we just can't," said Laura MacAvoy, with the animal rescue group.

That's why they're urging the city to fund more spay-and-neuter clinics.

"For a private individual to go get a spay or neuter at a regular vet, it can be up to $1,000, which just isn't affordable," MacAvoy said.

Adoptions, foster homes desperately needed

The ACC is asking the public for help through adoption, fostering and donations.

They held a pop-up adoption event at 232 Varet St. in Bushwick, Brooklyn, on Saturday, and another is scheduled for the same location from 11 a.m. until 4 p.m. Sunday. Adoption fees for large dogs and adult cats will be waived at that event.

Saturday's event was so successful, they stayed open late as would-be adopters continued to wait in long lines to adopt a new friend.

"I have another cat, and I just felt like she needed a little buddy," attendee Natalie Rojas said.

Taylor Warton's years-long wait for a cat ended as she convinced her mom to take her to the pop-up adoption event.

"We have walked out with a lovely black kitten. Her name is Pop. It won't be for long," Warton said.

To learn more about fostering, visit . For more information about adoption and donating, visit .