### Identification Measuring a mere 15–25 mm, the Bronze Caco is a miniature marvel of the amphibian world. Its dorsal coloration is highly variable, ranging from olive-green to a rich, metallic copper-brown, often adorned with dark spots or subtle longitudinal stripes. To distinguish it from the nearly identical Common Caco (*C. boettgeri*), you must look at the underbelly: *C. nanum* sports bold, large dark-grey or black blotches on a white background, whereas its cousin has much finer, pepper-like spotting. Its snout is slightly rounded, and its body appears somewhat "pear-shaped" when sitting.
### Habitat & Range This species is a staple of the moist eastern and southern regions of South Africa, stretching from the Western Cape through the Eastern Cape to KwaZulu-Natal. It thrives in high-rainfall grasslands, fynbos, and even lush suburban gardens. It specifically seeks out temporary water bodies—shallow pans, flooded seepages, and even water-filled hoofprints—where thick emergent vegetation provides ample cover from predators.
### Behaviour The Bronze Caco is a master of camouflage, but it’s impossible to ignore after a summer downpour. Males congregate in dense grass near the water’s edge, emitting a rapid, metallic *tink-tink-tink* call that sounds like a tiny hammer striking an anvil. They are "explosive breeders," appearing in massive numbers for short windows of time. If you approach, they don’t hop away; they dive vertically into the base of grass tussocks, vanishing instantly.
### Diet As a micro-predator, the Caco plays a vital role in the meadow ecosystem. It forages through damp leaf litter for tiny invertebrates, including ants, mites, and midges. Its hunting style is "sit-and-wait," using its lightning-fast tongue to snatch prey that wanders too close to its grassy hideout.
### Fascinating Fact The Bronze Caco’s call is so piercing and high-pitched that it is often mistaken for a cricket or a cicada. Despite their tiny size, a full chorus can reach decibel levels that make it difficult for human observers to hold a conversation while standing near the pond!