The City of San Diego does not have a cat limit. The limit on dogs is 6.
The Live Save rate for San Diego County Animal Services that covers both the City and the County is 82% for dogs and 54% for cats. Their live save rate for other animals, which would include rabbits, turtles, ferrets, etc., is an amazing 83%, and the live save rate for all animals, dogs, cats and other animals is 70%.
All of these stats are better than either LA City or County Animal Services.
Therefore, having no cat limit law, and a 6 dog limit certainly has not affected their save rate statistics negatively.
This County Agency impounds about 26,000 animals annually, which is about 60% of LA City's usual impound rate.
In addition, San Diego Humane, which does have investigation and seizure powers, as well as takes owner turn-ins, handles about 3,500 animals a year and has a live save rate of 86%. They work in association with the County agency.
In addition, eight City, County and private SPCA organizations cooperate to save animals in San Diego. Together they have an impound rate of 47,000, slightly more than LAAS, but a live save rate for dogs of 85%, 64% for cats, 89% for other animals and 76% for all animals.
These are fantastic statistics compared to Los Angles City or County.
Actually, it was hard to talk to anyone at the SD County shelter because no one seemed to be answering their phones. I finally talked to someone on their emergency reporting line, and then someone in the administrator's office. Both told me there was no cat limit. In addition, I then searched the stats of the various shelters and the SD Municipal code for info on pet limits. The city website confirmed no regulation of cat numbers.
From the City of San Diego website:
The quantity and type of animals kept on residential property are restricted in the San Diego city limits. Cats are not regulated. The total number of fowl and rabbits maintained on a residential property is restricted to 25, except up to 100 pigeons provided that the animals are kept at least 50 feet from any residence. Having more than six dogs at a residence is considered a kennel, and is not permitted in residential zones.