The plaintiffs say the "shelter has a duty to help, not harm, homeless dogs and cats."
The Animal Legal Defense Fund along with three people from Stockton filed the lawsuit against the City of Stockton.
The suit is not asking for money, only that the animal shelter follow the law.
The shelter is required to hold strays for at least 6 days before euthanization.
But Animal Legal Defense Fund Attorney Jenni James says the shelter's records show a different story over a one year period.
"Early euthansias are happening, 1,500 animals were euthanized before the expiration of the Stockton shelter's minimum holding period," says James.
James says 80 percent of the animals are behind locked doors where the public never sees them.
"Only about 20 percent of the animals are truly being given a meaningful chance of adoption," says James.
The City of Stockton is not commenting on the lawsuit.
Here’s something of note for booklovers, 80,000 of them will be given away in Stockton.
Stockton School Police And Other School Law Enforcement Under Investigation For Treatment Of StudentsWednesday, July 06, 2016
The State Attorney General Kamala Harris is investigating possible civil rights abuses involving children in schools, juvenile halls, and foster care statewide. One of the investigations is focusing on the Stockton Unified School District Police.
UPDATE June 28, 9:11 p.m.: The City of Stockton approved water rate hikes for the next five years Tuesday.
Many free clinics in California have opened up to people with felonies on their record to reduce those offenses to misdemeanors under Proposition 47.
The Delta Blood Bank in Stockton is putting out a call for donations as their blood supply has dipped to a critical level. Daily donations have dropped by 50 percent.