The long holiday weekend caused some crowding at the city's Animal Care Services shelter.
ACS staffers said they saw a surge of strays and owner surrenders all day Tuesday.
ACSLive Release Manager Bethany Heins said the kennels are nearly full after the long weekend that saw fewer intakes and stray pick-ups.
"What we're seeing right now is a big splurge," Heins said. "We're definitely in a situation where we'd like to see people come down on campus."
Heins urged animal lovers to visit the ACS campus and adopt some of the homeless pets. She said if that's not possible, they are also in need of foster families to free up more space.
"Fostering an animal is a great way to save a pet and get them off campus and bring them into your home on temporary situation," Heins said.
It's not just ACS that needs help freeing up space.
Gabriella Uresti is the clinic manager for San Antonio Pets Alive, which runs an adoption center at ACS.
Uresti said over the weekend heavy rains flooded some of their dog kennels, forcing them to move about 20 dogs inside. Fortunately several people answered their emergency call to foster those displaced animals.
"Actually all the animals that were in kennels did get fostered out that day so we did appreciate everyone stepping up for that," Uresti said. "We definitely have a large need at this time for fosters and adopters."
Homeless pets are a year round problem and as soon as these animals find a home there's always more waiting to fill their empty cages.
"If you've been thinking about wanting to foster or adopt a pet this is a perfect time because there's definitely a lot of great animals in need of a great home," Uresti said.
If you can't adopt or foster an animal in need, you can still help. San Antonio Pets Alive said they always need monetary donations to help the animals. You can also donate cat and dog food, treats, toys, cat litter, blankets and even cleaning supplies.