University of Michigan. Museum of Zoology.
Oklahoma Department of Agriculture, Food, and Forestry.
Texas A&M AgriLife Extension.
Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act
Australian Government. Department of the Environment and Energy.
Texas Parks and Wildlife.
Note: Multistate collaboration with a variety of feral hog resources
University of Missouri. Extension.
Wisconsin Department of Natural Resources.
USDA. Animal and Plant Health Inspection Service.
Ohio Department of Natural Resources.
Ohio State University. Extension.
Missouri Department of Conservation.
IUCN. Species Survival Commission. Invasive Species Specialist Group.
Smithsonian Institution. Smithsonian Marine Station at Fort Pierce.
Queensland Business and Industry Portal (Australia).
Oregon Department of Fish and Wildlife.