A man described feeling “the shudders” as more than 100 venomous red-bellied black snakes were removed from a pile of mulch in his Sydney backyard.

They average in size between 5 and 6.5 feet long and are typically found in moist habitats like swamps and lagoons but can also be found in forests, woodlands and grasslands. They are often found in drainage canals or thick grass clumps, according to the museum.