Key Takeaways
- Imported Tradition: The Americas have no indigenous livestock guardian dog breeds; all working LGDs descend from European and Asian imports brought by settlers and researchers.
- Coyote-Driven Adoption: The rapid expansion of LGD use in North America was driven primarily by coyote predation on sheep, with USDA research programs in the 1970s–80s validating non-lethal predator control.
- New Breed Development: The Colorado Mountain Dog represents a rare modern attempt to develop a purpose-bred American LGD suited to smaller acreages and closer human proximity.
North America
The United States and Canada have become major modern LGD users. Research beginning in the 1970s demonstrated these dogs' effectiveness against North American predators, leading to widespread adoption.
Common Breeds in North America
Great Pyrenees
Most common LGD in North America. Well-established breeding populations, widespread availability, and documented effectiveness against coyotes and smaller predators.
- Pros: Accessible, well-documented, many breeders
- Cons: May be less effective against wolves/bears
- Best for: Coyote pressure, first-time LGD owners
Anatolian Shepherd
Second most common in North America. Introduced through USDA research programs. Known for heat tolerance and effectiveness against larger predators.
- Pros: Versatile, handles heat well, larger predator capable
- Cons: More challenging for novices
- Best for: Experienced owners, serious predator pressure
Colorado Mountain Dog (CMD)
A developing breed created specifically for small acreage farms. Selection focuses on "neighbor-friendly" guardians with reduced barking and roaming, while retaining predator skills.
- Mix: Primarily Great Pyrenees x Anatolian Shepherd
- Goal: Family-safe, reduced barking, non-roaming
- Status: Breed in development (CMDR registry)
Other Established Breeds
Several other breeds have significant North American populations:
- Kangal: Growing presence; sought for wolf/bear situations
- Akbash: Established since 1970s research programs
- Maremma: Good populations, especially in sheep operations
- Komondor: Less common but established
- Central Asian Shepherd: Smaller populations for serious needs
Mixed LGD Working Crosses
Many North American working LGDs are intentional or unintentional crosses:
- Pyrenees/Anatolian crosses: Very common, combining traits
- Working "LGD" crosses: Selected for function, not breed purity
- Farm-bred dogs: Lines developed on specific operations
North American Predators
What LGDs face in North America:
| Predator | Threat Level | LGD Effectiveness |
|---|---|---|
| Coyotes | Most common threat | High--most LGDs effective |
| Domestic dogs | Common in some areas | High |
| Mountain lions | Regional | Moderate--multiple dogs recommended |
| Wolves | Expanding range | Variable--larger breeds needed |
| Black bears | Common in many areas | Moderate--usually deters, may not stop |
| Grizzly bears | Very serious | Limited--LGDs may be killed |
South America
South American sheep ranching regions have adopted LGDs more recently:
Patagonian LGD Deployment
Region: Argentina and Chile sheep ranches
Large sheep operations in Patagonia have begun using imported LGDs, primarily Great Pyrenees and Maremma, to address puma and feral dog predation.
- Breeds used: Great Pyrenees, Maremma
- Predators: Pumas, feral dogs
- Status: Growing adoption
Brazilian Ranch Guardian Programs
Region: Brazil
Some programs have introduced LGDs for jaguar coexistence efforts, similar to African cheetah/LGD programs.
- Focus: Human-wildlife conflict reduction
- Goal: Reduce retaliatory killing of big cats
- Status: Research and pilot programs
Breed Selection for Americas
Recommendations based on situation:
Coyote/Dog Pressure
- Great Pyrenees
- Maremma
- Akbash
- Pyrenees/Anatolian crosses
Wolves/Bears/Lions
- Kangal
- Anatolian
- Central Asian Shepherd
- Multiple dogs recommended
Health Notes
Common health considerations for this breed.
- Information pending field reporting.