Heathcliffe, a giant Australian burrowing cockroach on display at Sydney University, could be the world’s largest cockroach. Heathcliffe, and cockroaches like him, grow to be as big as 3.5 inches and can end up weighing more than an ounce.

What’s more, cockroaches like Heathcliffe are considered “great pets” Down Under, Sydney University senior biology lecturer Dr. Nathan Lo tells the Daily Telegraph. “They are totally unrelated to the American cockroach.” For instance, the Aussie bugs give birth to live young, not eggs, then tuck their babies into burrows while they go out and collect gum leaves for the kids to eat—survival skills they picked up after adapting to the cooling of Australia’s rainforests about 5 million years ago. Quite possibly, says Dr. Lo, the stout and sturdy Australian cockroach is “the heaviest of all insects. They are certainly a contender.”

Heathcliffe will be on display for just a while before returning to the home of one of the university’s media managers, who keeps him as a pet.