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Giant Bullfrogs Invade Vancouver's Stanley Park
21 Jun
Summary
- Giant American bullfrogs, an invasive species, have established a significant presence in Stanley Park.
- These large frogs prey on native species, including salamanders, turtles, rodents, and snakes.
- The Vancouver Park Board currently lacks a plan to manage the invasive bullfrog population.

American bullfrogs, notorious invasive predators, are thriving in Vancouver's Stanley Park. These amphibians, which can grow to the size of dinner plates, are actively consuming native species such as salamanders, turtles, rodents, and fish. First imported to British Columbia in the 1930s for farming, they escaped into the wild and are now widespread.
The presence of these bullfrogs raises concerns about their impact on the park's biodiversity. They compete fiercely with native frogs for resources and habitat. While they do not typically pose a threat to humans, their ecological impact is substantial, with few natural predators in their adult stage.
The Vancouver Park Board acknowledges the issue and states that a management plan is under development. However, experts note that complete eradication is likely unfeasible due to the established population and associated costs. Mitigation efforts, such as removing egg masses and trapping tadpoles, are suggested as more practical approaches to control their numbers across the province.