Portland’s Invasive Plant Management Strategy identified the need to assess the city’s invasive animal species to determine status and threats and to identify and guide management actions. Environmental Services worked with the Oregon Department of Agriculture to conduct a Portland-specific invasive animal assessment as part of the department’s larger statewide invasive species assessment. Researchers completed the invasive animal assessment report in March 2010 and presented it to city staff and the Oregon Invasive Species Council.

The animal assessment recommended:

• Compiling a list of non-native species established or likely to establish in the City of Portland
• Focusing on likely conditions for future introductions of non-native species
• Supporting relevant state legislation
• Supporting regional efforts to raise public awareness of issues concerning invasive animals and pet abandonment.