Smart litter box study links feline elimination changes to CKD
Bottom line
Version 1
Purina Institute said a newly published study suggests smart litter box monitoring may help flag subtle elimination changes associated with feline chronic kidney disease, potentially before pet parents recognize a problem at home. The work, published in Animals, was conducted by researchers from Nestlé Purina PetCare Global Research and Development and The Ohio State University, and builds on earlier work showing differences in defecation frequency in cats with chronic kidney disease. According to Purina, the monitor uses load sensors and machine learning to track weight and elimination behavior continuously and noninvasively in the home environment. (newscenter.purina.com)
Why it matters: For veterinary professionals, the study adds to a growing body of evidence that passive, in-home monitoring could help surface early changes in urination, defecation, and weight that may otherwise be missed between visits. That’s relevant in feline CKD, where early signs can be subtle and often overlap with other conditions. NC State internist Dr. Autumn Harris noted that common early clues include increased drinking and urination, weight loss, appetite changes, and larger litter clumps, and emphasized that tracking trends at home over time can be useful alongside standard diagnostics such as creatinine, SDMA, urine testing, and blood pressure measurement. (cvm.ncsu.edu)
What to watch: Whether independent validation, larger prospective studies, and clinical workflows turn smart litter box data into a practical screening or monitoring tool in everyday feline practice. (newscenter.purina.com)
Key facts
- Study type
- Newly published study in Animals
- Researchers
- Nestlé Purina PetCare Global Research and Development, and The Ohio State University
- Finding
- Smart litter box monitoring may help flag subtle elimination changes associated with feline chronic kidney disease
- Technology
- Load sensors and machine learning
- Monitoring
- Continuous, noninvasive, in-home tracking of elimination behavior and body weight
- Earlier supporting study
- 2025 Journal of Feline Medicine and Surgery study
- Earlier study sample
- 27 cats total: 14 healthy controls, and 13 cats with CKD
- Earlier study findings
- Cats with CKD had lower defecation frequency, more days without defecation, and higher urination frequency over 30 days
Version 2
Purina Institute is promoting new research that links feline elimination patterns captured by a smart litter box monitor with chronic kidney disease, adding another data point to the push toward passive, at-home monitoring in cats. In a press release issued August 31, 2026, the organization said the newly published Animals paper shows that continuous tracking of elimination behavior may help caregivers and veterinary teams recognize meaningful changes earlier. The study was conducted by Nestlé Purina PetCare Global Research and Development in collaboration with The Ohio State University. (newscenter.purina.com)
The announcement builds on prior work in this area rather than arriving out of nowhere. A 2025 Journal of Feline Medicine and Surgery study using the Petivity Smart Litter Box Monitor found that cats with CKD had lower defecation frequency, more days without defecation, and higher urination frequency than healthy cats over a 30-day observation period. That earlier study enrolled 27 cats after screening, with 14 healthy controls and 13 cats with CKD, and used one monitor per litter box with caregiver verification in multi-cat homes so the system could distinguish individual animals. (journals.sagepub.com)
Purina’s new release says the latest Animals publication expands the case that smart litter box data can detect subtle, clinically relevant changes tied to CKD. The company describes the technology as using load sensors and machine learning to monitor elimination behavior and body weight continuously and noninvasively in the home. Purina also points to prior baseline work published earlier in 2026 showing that connected devices can model normal feeding and elimination patterns in healthy cats, an important step if future systems are going to identify deviations reliably. (newscenter.purina.com)
Outside commentary underscores why this matters clinically, even if the technology is still evolving. In a February 21, 2026, NC State interview, board-certified internist Dr. Autumn Harris said CKD is one of the most common diseases in aging cats, affecting an estimated 30% to 50% of cats over age 10, and noted that many pet parents don’t recognize the disease until it has progressed. She highlighted increased drinking and urination, weight loss, appetite changes, vomiting, and lower energy as early clues, while also stressing that home trend data should complement, not replace, veterinary evaluation. (cvm.ncsu.edu)
Why it matters: For veterinary teams, the real value here is less about a gadget and more about signal detection. Cats often mask illness, and litter box changes are easy for pet parents to miss, especially in multi-cat homes or when changes develop gradually. If passive monitoring can reliably surface shifts in urination, defecation frequency, or body weight, it could prompt earlier workups, better client communication, and closer follow-up for at-risk seniors. At the same time, the evidence base is still emerging, and the earlier JFMS study itself noted practical limitations, including the need for caregiver verification of events and challenges in higher-density multi-cat households. (journals.sagepub.com)
There’s also a workflow question for practice: how these data fit with established CKD screening and monitoring. Current clinical management still depends on exam findings, chemistry, urinalysis, blood pressure, and markers such as creatinine and SDMA, with newer biomarkers still largely in research use. Smart litter box outputs may eventually become another longitudinal data stream, but they’re not a diagnosis on their own. Purina itself has previously said the Petivity system is not intended to diagnose, treat, mitigate, or cure disease, even as it may help identify changes worth investigating. (cvm.ncsu.edu)
What to watch: The next step is whether the Animals paper drives independent replication, larger prospective studies, and clearer protocols for how practices should interpret alerts, triage follow-up, and counsel pet parents about what home-monitoring data can and can’t tell them. (newscenter.purina.com)