A latest approach to wildfire defense has arrived on the steep, brush-covered slopes of the Arroyo Seco. More than 600 goats have been deployed across approximately 100 acres to reduce fire risks as part of the city’s Earth Day celebrations.
Biological Defense Against “Flash Fuels”
Over the next six to eight weeks, the goats will graze on invasive vegetation, such as mustard. This plant matter can quickly transform into dangerous fuel during the summer months.
The pilot program is led by the One Arroyo Foundation with city backing. It combines ancient grazing techniques with a modern urgency driven by climate change.
Daniel Rossman, executive director of the foundation, noted that the Arroyo Seco sits within a high-severity fire zone. Because the area acts as a natural corridor for wind, fires could spread rapidly if conditions align.
The urgency of the project has been further heightened by the Eaton Fire, which devastated parts of Pasadena bordering Altadena.
The Advantages of Grazing
Unlike traditional brush clearance that relies on gas-powered equipment, goats provide a low-emissions alternative. Rossman explained that goats run on their own fuel—the brush they eat—rather than fossil fuels.
The animals are also more effective than machinery on the Arroyo’s uneven and steep terrain. They can reach areas difficult for humans with heavy equipment to access without degrading the hillsides.
Project Logistics and Public Safety
The goats, owned by Capra Environmental Services, Corp., graze day and night. They are managed by a herder and a herding dog who live on-site in a trailer.
One Arroyo is covering the cost of roughly $85,000 and has launched a “Goat Fund Me” campaign for public support. The nonprofit is sharing the animals’ locations via Instagram for locals to observe.
Temporary electric fencing has been installed to prevent goats from entering nearby businesses and homes. Visitors are cautioned not to pet the goats, as Rossman described them as “generally grumpy.”
Measuring Success
The primary goal of this test run is to see if the goats can effectively clear invasive species to make room for native plants. The foundation hopes to reach a “sweet spot” where perennial natives, which stay green year-round, can return and compete.
The deployment was timed to coincide with the end of winter rains, which spur the growth of invasive species. Removing this growth before peak fire season is considered key to protecting the region’s environmental resources.
If the program demonstrates success, city officials may consider adopting the grazing effort as a long-term management strategy.
Frequently Asked Questions
Why are goats being used instead of traditional machinery?
Goats offer a low-emissions alternative to gas-powered equipment and can access steep, uneven terrain that is difficult for humans and heavy machinery to reach without causing land degradation.
How long will the goats be in the Arroyo Seco?
The goats are deployed for a period of six to eight weeks.
Can the public interact with the goats?
While the working goats are generally grumpy and should not be petted, animals that are more tolerant of humans will be available at a petting zoo during the Earth Day event by the Rose Bowl’s Aquatic Center.
Do you think biological solutions like goat grazing should replace mechanical brush clearing in other high-risk fire zones?
