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. David Stein called Reptile Relocation Sydney last week after watching around six snakes slither into the mulch.

Red-bellied black snakes are one of the most common venomous species in Australia but have not caused any human deaths on record. The five adult and 97 baby snakes are currently under quarantine and will be released into a national park once the weather cools.

An animal rescue service in Australia expected to remove four red-bellied snakes from the backyard of a Sydney home. Instead, they uncovered more than 100.