Forest rain frogs can range in colour from red, orange, yellow, green, and purple. They can also vary in size from a mere 2 cm and grow to be about 10 cm in body length. The purple frogs are known to contain a defence mechanism consisting of a toxic chemical on their slimy exterior. If contact is made with this toxin the temporary effect of paralysis can occur.[citation needed]
Breviceps sylvestris taeniatus is a subspecies of the forest rain frog and is found near Soutpansberg. It is separated from the main species by uninhabitable terrain.[4]
^Frost, Darrel R. (2014). "Breviceps sylvestris FitzSimons, 1930". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 19 October 2014.