Marsh rabbits, cottontail rabbits, and foxes effectively disappeared.
In a 2012 study, populations of raccoons had dropped 99.3 percent, opossums 98.9 percent, and bobcats 87.5 percent since 1997. The most severe declines in native species have occurred in the remote southernmost regions of Everglades National Park, where pythons have been established the longest. Severe mammal declines in Everglades National Park have been linked to Burmese pythons. Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Non-native Burmese pythons have established a breeding population in South Florida and are one of the most concerning invasive species in Everglades National Park.
