Don’t Let It Loose
Invasive species can out‑compete native plants and animals for food and space, damage ecosystems, disrupt food webs, and introduce parasites and disease. They also harm local economies by discouraging recreation, decreasing property values, and interfering with navigation and water control structures. Across British Columbia and Canada, invasive species cost billions of dollars every year.
Some of the most serious invasive species were originally sold as pets or as plants for water gardens, ponds, terrariums, and aquariums. Water gardeners, aquarium and terrarium owners can choose from a wide variety of aquatic plants, invertebrates, reptiles, amphibians, and fish—but unfortunately, some of these exotic species have the potential to become invasive.
When pets or plants become too much for an owner to care for, they are sometimes released into nearby waterways, forests, or parks. This practice causes serious harm.
Releasing pets or plants into the wild is both dangerous and inhumane. Some people believe that releasing an unwanted pet is the kindest option, but this is a misconception.
Most pets do not survive in the wild. Many die after being hit by vehicles, killed by predators, or from starvation and exposure. These animals are not adapted to local conditions and often suffer greatly. Releasing an animal into an unsuitable environment is considered animal cruelty, and charges can be laid under provincial legislation (BC SPCA).
Plants and animals that do survive can cause lasting ecological damage.
When Released Species Become Invasive
Some exotic pets and plants are able to thrive and reproduce once released. When this happens, they can:
- Out‑compete native species for food and habitat
- Prey on native wildlife
- Alter habitats and water quality
- Spread diseases and invasive parasites
- Permanently change ecosystem structure
Even if a pet or plant is native to parts of British Columbia, it should never be released. Captive animals and cultivated plants may carry diseases, parasites, or genetic traits that can harm wild populations.
What Can We Do?
As humans, we are the number one pathway for the spread of invasive species—but we can also be the strongest line of defense.
Preventing new invasions starts with responsible ownership.
Being a responsible pet or plant owner means:
- Researching the full lifespan, size, and care requirements before purchasing or adopting
- Planning for long‑term care, including changes in housing, finances, or time
- Never releasing pets, plants, aquarium water, or pond contents into the wild
If you are no longer able to care for a pet or plant:
- Contact local rescue organizations, animal shelters, or re‑homing networks
- Reach out to pet stores, veterinarians, or invasive species organizations for guidance
- As a last resort, humane euthanasia may be considered for animals that cannot be re‑homed
This responsibility applies not only to animals, but also to plants from aquariums, terrariums, water gardens, and ponds.