Invasive Species and Exotic Pets: Why Releasing Pets Harms Wildlife

An aquarium fish, reptile, bird or small mammal may seem unlikely to survive outdoors, but release is still the wrong solution. Most released pets suffer or die; some survive well enough to establish populations that disrupt native ecosystems.

The rule: do not let it loose

The U.S. Fish & Wildlife Service advises never releasing pets or aquarium organisms into the wild. In many places, release is also illegal.

How a pet becomes an invasive species

A non-native animal must survive, reproduce and spread. If it then harms native species, habitats, agriculture or other resources, it may be considered invasive. Climate, food availability and local predators all influence whether establishment succeeds.

Aquarium dumping counts

Plants, snails, fish and even water from aquariums can move organisms or pathogens. Never empty live material into ponds, streams or storm drains.

If you can no longer keep the animal

1. Contact the seller or breeder about returns.
2. Ask species-specific rescues or shelters about surrender.
3. Speak with an exotic-animal veterinarian for local options.
4. Check wildlife or agriculture agencies for amnesty or rehoming programs.

Before acquiring an exotic pet

Research adult size, lifespan, legal restrictions, diet, enclosure needs and access to veterinary care. A cheap juvenile animal can become an expensive decades-long commitment.

Sources

• U.S. Fish & Wildlife Service: Don’t Let It Loose