Rat

Rat Adverse Event Insights

The FDA Center for Veterinary Medicine database holds 84 adverse event reports for Rat, distributed across 3 distinct breeds currently tracked in the system. Of those reports, 57 involved a death outcome — producing a 6790.0% case-fatality rate among reported events, which reflects reporting severity bias rather than true population mortality. These figures are aggregated directly from openFDA's Animal & Veterinary Adverse Events endpoint and update as new voluntary submissions flow through pet owners, veterinarians, and drug manufacturers.

The most frequently reported clinical signs for Rat are Death (45 reports), Death by euthanasia (14 reports), INEFFECTIVE, ANESTHESIA (14 reports), Lack of efficacy - NOS (7 reports), with Death leading the reaction traffic at 45 submissions. On the product side, Ketamine Hydrochloride is the single most-referenced drug with 34 reports, followed by Isoflurane (9), Xylazine (7), Dexmedetomidine Hydrochloride (6). This combination surfaces which therapeutic classes generate the most adverse event chatter for this species — a useful starting point when comparing Rat reporting patterns against other companion animals in the dataset.

Of the 83 Rat reports with a coded outcome, Died accounts for the largest share at 61.4%. Annual submission volume spans 2,010 to 2,025 reports across the 15 years on file, a range that reflects evolving owner awareness, veterinary reporting habits, and new product approvals rather than stable underlying incidence. The breed-level table below breaks these patterns down further, showing how the 3 tracked rat breeds compare on volume, deaths, and average age at report. As with all FDA adverse event data, correlation is the ceiling — causation requires clinical investigation beyond what these aggregates can provide.