How a Utah team CT scanned a 400-pound crocodile
Bottom line
A 10-foot, nearly 400-pound Siamese crocodile named Bill was transported from Utah’s Hogle Zoo to University of Utah Health for a CT scan after showing decreased appetite, weight loss, and abdominal bloating. The scan, performed under anesthesia after extensive planning between zoo clinicians, anesthesiology staff, imaging specialists, and facilities teams, identified gastric stones as a likely contributor to his signs. According to the University of Utah’s account, the team built a CT-compatible transport platform so Bill could be moved safely and scanned without repeated repositioning, highlighting how human health infrastructure can be adapted for complex zoological cases. (attheu.utah.edu)
Why it matters: For veterinary professionals, the case is a practical example of how advanced imaging access can change the diagnostic path for large exotic patients that can’t be fully worked up with routine radiography or ultrasound alone. CT is already considered a valuable modality in reptile medicine, particularly when anatomy, body size, or coelomic superimposition limits other imaging approaches, and Bill’s case shows the operational side of making that possible: cross-institutional coordination, anesthesia planning, custom transport, and species-specific handling. It also underscores that gastroliths are not inherently abnormal in crocodilians, so imaging findings still need to be interpreted in clinical context. (merckvetmanual.com)
What to watch: Expect continued interest in shared zoo-human hospital imaging partnerships, especially for cases where size, safety, and diagnostic yield make CT the most informative next step. (attheu.utah.edu)
Key facts
- Patient
- Bill, a Siamese crocodile
- Size
- 10 feet long, nearly 400 pounds
- Location
- Utah’s Hogle Zoo
- Imaging
- CT scan at University of Utah Health
- Clinical signs
- Decreased appetite, weight loss, and abdominal bloating
- Finding
- Gastric stones
- Planning
- Required coordination among zoo clinicians, anesthesiology staff, imaging specialists, and facilities teams
- Transport
- A CT-compatible transport platform was built so he could be moved safely and scanned without repeated repositioning
Aging exotic patients don’t often get access to hospital-grade CT on this scale, which is why Bill’s case is drawing attention. Bill, a 10-foot-long Siamese crocodile at Utah’s Hogle Zoo, underwent CT imaging at University of Utah Health after his care team noted decreased appetite, weight loss, and abdominal bloating. The scan revealed gastric stones, and the case was presented by the university as a highly coordinated collaboration between zoo medicine and a human academic medical center. (attheu.utah.edu)
What made the case notable wasn’t just the species involved, but the logistics behind the workup. Bill weighs about 400 pounds and poses obvious handling and staff-safety challenges, so the zoo and hospital teams had to plan transport, anesthesia, positioning, and scanner access in advance. University and zoo accounts say the maintenance team created a heavy-duty board compatible with CT imaging, allowing Bill to remain on the same platform during transport and scanning to reduce movement and streamline the procedure. (attheu.utah.edu)
From a clinical standpoint, the finding of gastric stones is interesting, but not automatically pathologic. Gastroliths are well documented in crocodilians and may play roles in buoyancy, equilibrium, or digestion-related behavior. Recent veterinary literature on crocodiles notes that stones can be common enough to complicate interpretation, especially when patients present with gastrointestinal signs, meaning clinicians still have to weigh imaging findings against species norms, husbandry history, body condition, and the rest of the diagnostic picture. (pmc.ncbi.nlm.nih.gov)
The broader imaging context also matters. Merck’s veterinary guidance describes CT as an important modality in reptile medicine, and other reptile imaging references note that advanced imaging can be especially useful when standard radiographs are limited by anatomy or patient size. In crocodilians, where restraint, immobility, and equipment fit are major constraints, the barrier is often not whether CT would help, but whether a team can safely get the patient to the scanner and through the study. Bill’s case offers a real-world model for solving that problem. (merckvetmanual.com)
Industry reaction, at least in the source material available publicly, has centered less on a novel diagnosis than on the collaboration itself. The University of Utah and follow-on coverage emphasized the multidisciplinary planning involved, including zoo veterinary staff, human anesthesiology and radiology personnel, and operational support teams. That framing is useful: for many zoological and exotic animal programs, access to advanced diagnostics may depend as much on relationships with nearby human hospitals as on in-house veterinary capability. (attheu.utah.edu)
Why it matters: For veterinary professionals, especially those in zoological medicine, exotics, referral imaging, and anesthesia, this is a reminder that tertiary-level diagnostics for unusual species are often a systems challenge. The case illustrates how custom restraint and transport solutions, careful sedation planning, and external imaging partnerships can expand what’s feasible for large reptiles. It also reinforces a quieter clinical point: unusual imaging findings in nontraditional species need species-aware interpretation, because “abnormal” on the scan may still overlap with normal biology. (pmc.ncbi.nlm.nih.gov)
There’s also a practical lesson for smaller practices and specialty centers. Even if most clinicians will never scan a crocodile, the same framework applies to giant tortoises, large snakes, hoofstock, marine mammals, and other patients that exceed routine imaging workflows. Preplanning around weight limits, transfer surfaces, anesthesia recovery, and interfacility communication can determine whether advanced imaging is merely desirable or actually usable. Bill’s case makes that operational thinking visible. (dotmed.com)
What to watch: The next question is whether more zoos and exotic programs formalize referral pathways with human hospitals for CT and MRI, and whether cases like this lead to more published protocols on imaging logistics, anesthesia, and interpretation for large reptile patients. (attheu.utah.edu)