Dog park mystery: Illness and one death shut down Nuevo Dog Park in Santa Clara
A normally happy corner of Santa Clara has gone eerily quiet. Nuevo Dog Park – the fenced play area at Ryder Street and La Rambla Avenue – has been off-limits since August 4, after city officials linked it to a wave of sudden, severe dog illnesses and at least one confirmed death.
Over June and July, local vets and the city’s animal control office started seeing a troubling pattern: otherwise healthy dogs were coming down with intense vomiting, diarrhea, tremors, or seizures within hours of visiting Nuevo. In the most serious cases, the symptoms escalated so fast that owners were racing their pets to emergency clinics, unsure if they’d survive the ride.
Chanu Malla’s dog Bella was one of them. “I wasn’t sure if she was going to make it during the 10-minute drive to the vet,” he said. “She’s never had major health issues like that before.” Bella pulled through – after emergency treatment that ran into the thousands – but others weren’t so lucky. In late July, a dog died after a park visit.
Juliana Martinez’s dog Ozzy also had a close call. “He started violently trembling,” she said. “It was traumatizing. At first the vet thought it was epilepsy.” Once she heard about other cases, she began taping printed warnings around the park. Those homemade flyers, along with word-of-mouth and online posts, helped spread the alarm before the official closure.
Timeline
June–July 2025: Reports of sick dogs roll in. Symptoms include gastrointestinal distress and seizures.
Week of July 28: First confirmed fatality linked to the park.
Aug. 4: City shuts Nuevo Dog Park indefinitely.
Aug. 5–6: Environmental testing begins. Security cameras go up as a precaution against tampering.
City officials say they take the situation “extremely seriously” and are running a full environmental assessment – testing soil, grass, water, and anything else that could be contaminated. They’ve ruled out pesticides and rodenticides, saying the park is maintained with pet-safe products. That still leaves a wide field of possibilities: naturally occurring toxins like poisonous plants or fungus, algae in standing water, or something intentionally left behind.
The security cameras aren’t just about vandalism – though the park has had issues in the past – they’re also there in case foul play turns out to be a factor.
The sick-dog stories keep coming
For condo resident Marianne Saint George, the closure explained a lot. “Both of my dogs got seriously ill with diarrhea after visiting,” she said. “I thought the park was closed because of vandalism. I had no idea it might be a health hazard.”
Then there’s Boba, a young Samoyed who ended up “fighting for his life” after multiple seizures triggered heatstroke and internal damage. His owners faced nearly $20,000 in vet bills. After intensive care, he’s recovering – but the episode left his family shaken.
Is it just Santa Clara?
For now, all signs point to this being a localized problem. There’s no evidence of similar illness clusters at other Bay Area dog parks this summer. Still, the history of pet poisonings in the region – from toxic mushroom outbreaks to the infamous 2013–2014 poisoned meatball case in San Francisco – is enough to keep owners on edge.
Santa Clara has set up a dedicated Dog Park Hotline (408-615-3144) and is collecting reports through the MySantaClara app. Officials urge anyone whose dog shows sudden illness after a park visit – anywhere – to see a vet immediately. Warning signs include:
- Vomiting or diarrhea
- Tremors or seizures
- Drooling or disorientation
They also recommend keeping dogs from eating or drinking anything off the ground, and steering clear of closed parks entirely until given the all-clear.
The road ahead
No cause has been confirmed, and there’s no target date for reopening Nuevo Dog Park. City officials say it will stay closed until they’re sure it’s safe. For now, the only thing certain is the solidarity of the Santa Clara dog-owning community – neighbors swapping warnings, vets sharing test results, and everyone hoping to get answers soon.
“We understand pets are cherished family members,” the city’s statement reads. “The health and safety of Santa Clara residents, including their four-legged companions, is a top priority.”
Until the mystery is solved, Nuevo’s grassy field will remain quiet – its usual soundtrack of happy barks replaced by the uneasy wait for answers.
