Jodie Foster is a 15-foot, 50-kilogram reticulated python living at Chester Zoo in England. In 2024, keepers noticed she was eating less and moving less than usual. Tests revealed a fibrosarcoma, a malignant tumor, growing in her jaw. Vets surgically removed it. However, the tumor returned and began destroying part of her jawbone. Consequently, her veterinary team faced a choice between more surgery alone or something entirely new.
Who Is Jodie Foster, and Why Does a Python Have That Name?
Jodie arrived at Chester Zoo roughly 20 years ago with paperwork simply marked “JF,” shorthand for “juvenile female.” Keepers noticed the initials matched the Oscar-winning actress and the name stuck. She is now approximately 23 years old. Reticulated pythons can live several decades in captivity, so her age places her solidly in mature adulthood, not old age, for the species.
What Is Electrochemotherapy, and How Does It Actually Work?
Electrochemotherapy combines a chemotherapy drug called bleomycin with short, controlled electrical pulses delivered directly to the tumor site. Bleomycin normally struggles to cross cell membranes on its own. The electrical pulses temporarily open pores in the membrane, a process called electroporation. As a result, bleomycin floods directly into the cancer cell’s interior. Once inside, it creates breaks in the cell’s DNA strands, destroying the cell’s ability to replicate. Research shows electroporation can boost bleomycin’s cell-killing power by up to several hundred times compared to the drug alone. Therefore, vets can use dramatically lower doses than standard systemic chemotherapy requires, often in a single procedure.
Why Was Treating Jodie Foster The Python Considered a World-First?
Electrochemotherapy is not new to veterinary medicine. Dogs, cats, and ferrets have received it for cutaneous tumors for years with solid results. It has also treated human basal cell carcinomas, melanoma metastases, and head-and-neck cancers across more than 180 European centers. Nobody, however, had adapted the protocol for a reptile’s jaw before. Jose Alvarez Picornell of the University of Liverpool’s Department of Small Animal Clinical Science stated it plainly: this was the first documented use of electrochemotherapy in a snake. The team plans to formally publish the procedure on Jodie Foster the Python for other veterinary specialists to study.
How Do You Even Perform Surgery on a 15-Foot Snake?
Logistics became their own medical challenge. No standard operating table fits a python of Jodie Foster’s size, so the team pushed two tables together, effectively building one the size of a double bed. Jodie was anesthetized inside her own habitat first, then carefully carried to the veterinary center. Heated blankets and warmed air kept her body temperature stable throughout, since reptiles cannot regulate their own heat like mammals do. Vet Ian Ashpole performed a hemi-mandibulectomy, removing the diseased portion of her jawbone, before administering electrochemotherapy to eliminate any remaining cancer cells. The full surgery lasted 90 minutes.
Did Losing Part of Her Jaw Affect Jodie’s Ability to Eat?
Remarkably, no. Pythons unhinge their jaws to swallow prey far larger than their own heads, a mechanical trick built into their skull anatomy. Months of observation since surgery confirm Jodie still strikes, grips, and swallows whole prey without difficulty. A final check this week confirmed she remains free of any cancer recurrence. She is described as back to her “bright and feisty” self, actively exploring her habitat.
How Common Is Cancer in Snakes, and Should Reptile Keepers Worry?
This is where the data gets genuinely inconsistent, so it deserves an honest flag rather than a confident number. One frequently cited review places neoplasia prevalence in snakes between 12.4% and 15%. A separate necropsy-based study found a lower figure, closer to 2.9%. The gap likely comes down to methodology: necropsy studies only catch cancers present at death, while clinical reviews catch anything diagnosed during a snake’s life. What both agree on is this: fibrosarcoma and soft tissue sarcomas rank among the most frequently reported tumor types in snakes, particularly in colubrids and boids. Surgical excision remains the standard first-line treatment, which is exactly the path Jodie’s team started with before escalating to electrochemotherapy.
What Does Jodie’s Recovery Mean for Future Reptile Patients?
Her case gives exotic animal vets a genuinely new tool, not just a feel-good headline. Electrochemotherapy requires far lower drug doses than systemic chemotherapy, which matters enormously in species where safe chemo dosing data barely exists. Furthermore, the treatment targets the tumor site directly rather than circulating through the entire body, reducing systemic side effects. Formal publication of Jodie’s case will let other reptile specialists replicate and refine the protocol. In short, one very large, very lucky snake may end up improving cancer outcomes for reptiles most vets currently have few options to treat.
My Experience — A Reptile Keeper’s Take
I keep an African chameleon named Cosmo, not a fifteen-foot python, so I will not pretend Jodie’s case mirrors anything in my own enclosure. However, her story hit home for a specific reason: reptile illness hides well. Cosmo shows sickness through subtle color shifts and small behavioral changes, not obvious limping or whining the way a dog would. Jodie’s keepers caught her tumor because they noticed reduced eating and reduced activity, two signals easy to dismiss as “just a quiet week.” That vigilance, not luck, is what caught her cancer early enough to treat at all. It is a genuine reminder that any reptile keeper should log baseline behavior for their animal. A python that stops striking at food, or a chameleon that stays dark and withdrawn for days, deserves a vet visit, not a wait-and-see approach.
FAQ – Jodie Foster the Python’s Cancer Treatment
Jodie Foster is a reticulated python, scientifically Malayopython reticulatus, one of the longest snake species on Earth. She measures roughly 15 feet and weighs approximately 50 kilograms. Reticulated pythons are native to Southeast Asia and commonly kept in zoos and private collections worldwide.
No, electrochemotherapy uses much lower drug doses than systemic chemotherapy. Electrical pulses open temporary pores in cancer cell membranes, letting the drug bleomycin enter directly. This localized delivery avoids flooding the entire body with toxic chemotherapy concentrations.
A fibrosarcoma is a malignant tumor arising from fibrous connective tissue. In reptiles, fibrosarcomas frequently appear as soft tissue masses and rank among the most commonly diagnosed cancer types in snakes, particularly colubrids and boid species like pythons.
Yes, veterinary oncologists have used electrochemotherapy on dogs, cats, and ferrets for cutaneous tumors for several years. Jodie’s case marks the first documented application in a snake, adapted specifically for reptile anatomy and physiology by Chester Zoo and University of Liverpool specialists.
The surgery carried real logistical risk, since reptiles cannot regulate body temperature independently under anesthesia. Vets combined two operating tables, used heated blankets and warmed air, and monitored her closely throughout the 90-minute procedure. She recovered quickly afterward with no complications reported.
Not yet, as widespread availability. This procedure required a specialized university oncology team and zoo-level veterinary resources. Formal publication of Jodie’s case should eventually help more reptile-experienced vets learn and offer the treatment, though broad accessibility will likely take time.
Sources
- University of Liverpool
https://news.liverpool.ac.uk/2026/08/21/world-first-cancer-treatment-saves-python-after-tumour-destroys-part-of-her-jaw/ - CNN
https://www.cnn.com/2026/08/21/uk/python-cancer-electrochemotherapy-scli-intl - ThePrint
https://theprint.in/feature/jodie-foster-python-first-snake-new-cancer-treatment/3021324/ - PubMed (Electrochemotherapy Mechanism)
https://pubmed.ncbi.nlm.nih.gov/12972356/ - PMC (Reversible Electroporation for Cancer Therapy)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11840168/ - ScienceDirect (Soft Tissue Tumours in Snakes)
https://www.sciencedirect.com/science/article/abs/pii/S0021997516300482 - SAGE Journals (Neoplasia Prevalence in Snakes)
https://journals.sagepub.com/doi/full/10.1354/vp.45-5-693
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