Who Profits
The economics of beagle testing — $1,100-$1,500 per dog, $320k-$1M per study, a $20B CRO market, and a system where the animal is the cheapest input.
The beagle testing business operates on two revenue streams: a modest dog-sales business and a much larger study-execution business. The dog itself is the cheapest component in the system. The infrastructure around it generates billions.
What a Beagle Costs
Three anchored price points exist in the public record:
- ~$1,100 per dog (Envigo) — DOJ statement: ~$16 million from selling nearly 15,000 dogs between 2019 and May 20221
- ~$1,500 per dog (Ridglan) — local journalism reporting on research sales prices (2026)2
- $600-$900 per dog (2009) — a scientific consensus report cited dealer-provided prices for a young, 20-25 kg dog (not inflation-adjusted)3
Current market prices cluster around $1,100-$1,500 per dog. Surgically prepared animals (with implanted telemetry devices) cost more. Robust, current price sheets are proprietary and not systematically published.
What a Study Costs
The dog purchase price is a rounding error compared to study costs:
| Test | Cost (2024 USD) | Source |
|---|---|---|
| 90-day oral toxicity, non-rodent | $319,600 | EPA OCSPP 870.3150 |
| Chronic oral toxicity, dog | $1,023,800 | EPA OCSPP 870.4100 |
| 90-day oral toxicity, rodent | $213,400 | EPA OCSPP 870.3100 |
| In vitro genotoxicity | $7,200 | EPA OCSPP 870.5100 |
A beagle at $1,100 is less than 0.2% of a $1 million chronic study. This is why dog prices have minimal influence on whether testing occurs. The cost driver is the regulatory process, not the animal.
The Cost to Keep a Dog
How long a breeder holds a dog before sale determines profitability:
- Commercial kennel — $4-$10/day (fully loaded cost estimate)4
- University vivarium — $11-$36/day (published per-diem rates: Buffalo $11.27, Johns Hopkins $18.42, Iowa $36.22)5
- Modeled all-in COGS per dog sold — $2,300 base case (sensitivity range: $1,155-$5,250)6
At a $1,100-$1,500 sale price and $4-$10/day holding cost, breeding is marginally profitable for lean, high-throughput operators and potentially unprofitable for facilities with longer holding periods or higher compliance costs.
The Cost Stack
Approximate breakdown per dog sold (base case):7
- Breeding stock allocation — $350
- Pre-weaning pup care — $200
- Grow-out husbandry (weaning to sale) — $800
- Feed and bedding — $120
- Veterinary care — $150
- Regulatory compliance and QA — $120
- Facility amortization — $180
- Mortality load factor — $180
- Outbound transport — $200
- Total — ~$2,300
The CRO Market
The real money is in study execution, captured by contract research organizations:
- Charles River Laboratories — $4.05 billion revenue (FY2024)8
- Inotiv RMS segment — $325 million revenue, 17.4% operating margin (FY2025). One RMS client accounted for 16.6% of total revenue.9
- Global preclinical CRO market — exceeds $20 billion annually
Marshall's Growing Monopoly
With Envigo closed and Ridglan surrendering its license, Marshall BioResources is becoming the dominant supplier of purpose-bred beagles in the United States. Supply concentration creates pricing power — and fragility. A single compliance failure or enforcement action at Marshall would disrupt the entire US research dog pipeline.
Sources
- 1.U.S. DOJ statement on Envigo. ~$16M from ~15,000 dogs, 2019-May 2022.
- 2.Local journalism (2026). Ridglan Farms research sales at ~$1,500 per dog.
- 3.Scientific and Humane Issues in the Use of Random Source Dogs and Cats in Research (2009). Dealer-provided prices.
- 4.Economics. Modeled commercial kennel dog-day cost range.
- 5.Economics. Published university per-diem schedules (UB, JHU, Iowa).
- 6.Economics. Unit cost model, base case with sensitivity analysis.
- 7.Economics. Cost stack breakdown per dog sold.
- 8.Charles River Laboratories investor relations. FY2024 full-year revenue.
- 9.Inotiv SEC filings. RMS segment financials FY2023-2025.