Many introduced animals have been recorded in the park including the cane toad, red fox, feral cat, rabbit (Oryctolagus cuniculus), black rat (Rattus rattus), house mouse (Mus musculus), and feral pig. Pigs disturb the ground, promoting the spread of weeds, remove natural recruitment of flora and fauna and can be vectors for pathogens such as cinnamon fungus (Phytopthera cinnamomi). Cinnamon fungus has been found on the Clarke Range, including in one area of Dalrymple Heights, where approximately 20% of the rainforest has died.